38931230777 has 4 divisors (see below), whose sum is σ = 39055612020. Its totient is φ = 38806849536.

The previous prime is 38931230729. The next prime is 38931230791. The reversal of 38931230777 is 77703213983.

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 2226801721 + 36704429056 = 47189^2 + 191584^2 .

It is a cyclic number.

It is not a de Polignac number, because 38931230777 - 2¹² = 38931226681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38931530777) 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, 62190152 + ... + 62190777.

It is an arithmetic number, because the mean of its divisors is an integer number (9763903005).

Almost surely, 2^38931230777 is an apocalyptic number.

It is an amenable number.

38931230777 is a deficient number, since it is larger than the sum of its proper divisors (124381243).

38931230777 is a wasteful number, since it uses less digits than its factorization.

38931230777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124381242.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 38931230777 in words is "thirty-eight billion, nine hundred thirty-one million, two hundred thirty thousand, seven hundred seventy-seven".