38356728653 has 4 divisors (see below), whose sum is σ = 38366595420. Its totient is φ = 38346861888.

The previous prime is 38356728607. The next prime is 38356728659. The reversal of 38356728653 is 35682765383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28309072009 + 10047656644 = 168253^2 + 100238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38356728653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38356728659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4927550 + ... + 4935327.

It is an arithmetic number, because the mean of its divisors is an integer number (9591648855).

Almost surely, 2^38356728653 is an apocalyptic number.

It is an amenable number.

38356728653 is a deficient number, since it is larger than the sum of its proper divisors (9866767).

38356728653 is an equidigital number, since it uses as much as digits as its factorization.

38356728653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9866766.

The product of its digits is 21772800, while the sum is 56.

The spelling of 38356728653 in words is "thirty-eight billion, three hundred fifty-six million, seven hundred twenty-eight thousand, six hundred fifty-three".