18840157074 has 48 divisors (see below), whose sum is σ = 41543512920. Its totient is φ = 6169063680.

The previous prime is 18840157073. The next prime is 18840157103. The reversal of 18840157074 is 47075104881.

18840157074 is a `hidden beast` number, since 1 + 8 + 8 + 4 + 0 + 1 + 570 + 74 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7533024849 + 11307132225 = 86793^2 + 106335^2 .

It is not an unprimeable number, because it can be changed into a prime (18840157073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 864342 + ... + 885870.

Almost surely, 2^18840157074 is an apocalyptic number.

18840157074 is an abundant number, since it is smaller than the sum of its proper divisors (22703355846).

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

18840157074 is a wasteful number, since it uses less digits than its factorization.

18840157074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22395 (or 22392 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 18840157074 in words is "eighteen billion, eight hundred forty million, one hundred fifty-seven thousand, seventy-four".