38764645 has 4 divisors (see below), whose sum is σ = 46517580. Its totient is φ = 31011712.

The previous prime is 38764643. The next prime is 38764657. The reversal of 38764645 is 54646783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54646783 = 71 ⋅769673.

It can be written as a sum of positive squares in 2 ways, for example, as 20223009 + 18541636 = 4497^2 + 4306^2 .

It is a cyclic number.

It is not a de Polignac number, because 38764645 - 2¹ = 38764643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38764643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3876460 + ... + 3876469.

It is an arithmetic number, because the mean of its divisors is an integer number (11629395).

Almost surely, 2^38764645 is an apocalyptic number.

It is an amenable number.

38764645 is a deficient number, since it is larger than the sum of its proper divisors (7752935).

38764645 is an equidigital number, since it uses as much as digits as its factorization.

38764645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752934.

The product of its digits is 483840, while the sum is 43.

The square root of 38764645 is about 6226.1260025798. The cubic root of 38764645 is about 338.4375977252.

The spelling of 38764645 in words is "thirty-eight million, seven hundred sixty-four thousand, six hundred forty-five".