38031559957 has 4 divisors (see below), whose sum is σ = 38038777740. Its totient is φ = 38024342176.

The previous prime is 38031559939. The next prime is 38031559991. The reversal of 38031559957 is 75995513083.

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 13029309316 + 25002250641 = 114146^2 + 158121^2 .

It is a cyclic number.

It is not a de Polignac number, because 38031559957 - 2⁷ = 38031559829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38031559898 and 38031559907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38031559927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3600982 + ... + 3611527.

It is an arithmetic number, because the mean of its divisors is an integer number (9509694435).

Almost surely, 2^38031559957 is an apocalyptic number.

It is an amenable number.

38031559957 is a deficient number, since it is larger than the sum of its proper divisors (7217783).

38031559957 is an equidigital number, since it uses as much as digits as its factorization.

38031559957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217782.

The product of its (nonzero) digits is 5103000, while the sum is 55.

The spelling of 38031559957 in words is "thirty-eight billion, thirty-one million, five hundred fifty-nine thousand, nine hundred fifty-seven".