38618971965189 has 40 divisors (see below), whose sum is σ = 71925281131968. Its totient is φ = 20061803615040.

The previous prime is 38618971965181. The next prime is 38618971965227. The reversal of 38618971965189 is 98156917981683.

38618971965189 is a `hidden beast` number, since 3 + 8 + 6 + 1 + 8 + 9 + 7 + 1 + 96 + 518 + 9 = 666.

It is not a de Polignac number, because 38618971965189 - 2³ = 38618971965181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38618971965181) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3095951112 + ... + 3095963585.

Almost surely, 2^{38618971965189} is an apocalyptic number.

It is an amenable number.

38618971965189 is a deficient number, since it is larger than the sum of its proper divisors (33306309166779).

38618971965189 is a wasteful number, since it uses less digits than its factorization.

38618971965189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191914727 (or 6191914718 counting only the distinct ones).

The product of its digits is 1410877440, while the sum is 81.

The spelling of 38618971965189 in words is "thirty-eight trillion, six hundred eighteen billion, nine hundred seventy-one million, nine hundred sixty-five thousand, one hundred eighty-nine".