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38749153 = 43738861

38749153 has 4 divisors (see below), whose sum is σ = 38762388. Its totient is φ = 38735920.

The previous prime is 38749147. The next prime is 38749159. The reversal of 38749153 is 35194783.

38749153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (38749147) and next prime (38749159).

It can be written as a sum of positive squares in 2 ways, for example, as 32638369 + 6110784 = 5713^2 + 2472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38749153 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38749159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58 + ... + 8803.

It is an arithmetic number, because the mean of its divisors is an integer number (9690597).

It is a 2928-hyperperfect number.

Almost surely, 238749153 is an apocalyptic number.

It is an amenable number.

38749153 is a deficient number, since it is larger than the sum of its proper divisors (13235).

38749153 is an equidigital number, since it uses as much as digits as its factorization.

38749153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13234.

The product of its digits is 90720, while the sum is 40.

The square root of 38749153 is about 6224.8817659454. The cubic root of 38749153 is about 338.3925070343.

The spelling of 38749153 in words is "thirty-eight million, seven hundred forty-nine thousand, one hundred fifty-three".

Divisors: 1 4373 8861 38749153