38874642161 has 8 divisors (see below), whose sum is σ = 38980685160. Its totient is φ = 38768640768.

The previous prime is 38874642127. The next prime is 38874642199. The reversal of 38874642161 is 16124647883.

It can be written as a sum of positive squares in 4 ways, for example, as 2424577600 + 36450064561 = 49240^2 + 190919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38874642161 - 2⁶ = 38874642097 is a prime.

It is a super-2 number, since 2×38874642161² (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 (38874642061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3057305 + ... + 3069993.

It is an arithmetic number, because the mean of its divisors is an integer number (4872585645).

Almost surely, 2^38874642161 is an apocalyptic number.

It is an amenable number.

38874642161 is a deficient number, since it is larger than the sum of its proper divisors (106042999).

38874642161 is a wasteful number, since it uses less digits than its factorization.

38874642161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20803.

The product of its digits is 1548288, while the sum is 50.

The spelling of 38874642161 in words is "thirty-eight billion, eight hundred seventy-four million, six hundred forty-two thousand, one hundred sixty-one".