38689780953 has 4 divisors (see below), whose sum is σ = 51586374608. Its totient is φ = 25793187300.

The previous prime is 38689780949. The next prime is 38689780979. The reversal of 38689780953 is 35908798683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38689780953 - 2² = 38689780949 is a prime.

It is a super-2 number, since 2×38689780953² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38689782953) 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, 6448296823 + ... + 6448296828.

It is an arithmetic number, because the mean of its divisors is an integer number (12896593652).

Almost surely, 2^38689780953 is an apocalyptic number.

It is an amenable number.

38689780953 is a deficient number, since it is larger than the sum of its proper divisors (12896593655).

38689780953 is a wasteful number, since it uses less digits than its factorization.

38689780953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12896593654.

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 38689780953 in words is "thirty-eight billion, six hundred eighty-nine million, seven hundred eighty thousand, nine hundred fifty-three".