38842675981 has 16 divisors (see below), whose sum is σ = 42159020400. Its totient is φ = 35642142720.

The previous prime is 38842675979. The next prime is 38842675999. The reversal of 38842675981 is 18957624883.

It can be written as a sum of positive squares in 8 ways, for example, as 325080900 + 38517595081 = 18030^2 + 196259^2 .

It is a cyclic number.

It is not a de Polignac number, because 38842675981 - 2¹ = 38842675979 is a prime.

It is a super-2 number, since 2×38842675981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38842675481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1061665 + ... + 1097641.

It is an arithmetic number, because the mean of its divisors is an integer number (2634938775).

Almost surely, 2^38842675981 is an apocalyptic number.

It is an amenable number.

38842675981 is a deficient number, since it is larger than the sum of its proper divisors (3316344419).

38842675981 is a wasteful number, since it uses less digits than its factorization.

38842675981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37584.

The product of its digits is 23224320, while the sum is 61.

The spelling of 38842675981 in words is "thirty-eight billion, eight hundred forty-two million, six hundred seventy-five thousand, nine hundred eighty-one".