38891492468 has 12 divisors (see below), whose sum is σ = 68065678212. Its totient is φ = 19444155840.

The previous prime is 38891492449. The next prime is 38891492489. The reversal of 38891492468 is 86429419883.

It can be written as a sum of positive squares in 2 ways, for example, as 23584359184 + 15307133284 = 153572^2 + 123722^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38891492468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341705 + ... + 441072.

It is an arithmetic number, because the mean of its divisors is an integer number (5672139851).

Almost surely, 2^38891492468 is an apocalyptic number.

It is an amenable number.

38891492468 is a deficient number, since it is larger than the sum of its proper divisors (29174185744).

38891492468 is a wasteful number, since it uses less digits than its factorization.

38891492468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795202 (or 795200 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 62.

The spelling of 38891492468 in words is "thirty-eight billion, eight hundred ninety-one million, four hundred ninety-two thousand, four hundred sixty-eight".