38120217858 has 12 divisors (see below), whose sum is σ = 82593805398. Its totient is φ = 12706739280.

The previous prime is 38120217841. The next prime is 38120217887. The reversal of 38120217858 is 85871202183.

38120217858 is a `hidden beast` number, since 381 + 2 + 0 + 217 + 8 + 58 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37699270569 + 420947289 = 194163^2 + 20517^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1058894923 + ... + 1058894958.

Almost surely, 2^38120217858 is an apocalyptic number.

38120217858 is an abundant number, since it is smaller than the sum of its proper divisors (44473587540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38120217858 is a wasteful number, since it uses less digits than its factorization.

38120217858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117789889 (or 2117789886 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 38120217858 in words is "thirty-eight billion, one hundred twenty million, two hundred seventeen thousand, eight hundred fifty-eight".