18161289396 has 24 divisors (see below), whose sum is σ = 47084824640. Its totient is φ = 6053763096.

The previous prime is 18161289379. The next prime is 18161289491. The reversal of 18161289396 is 69398216181.

18161289396 is a `hidden beast` number, since 18 + 1 + 612 + 8 + 9 + 3 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84079936 + ... + 84080151.

Almost surely, 2^18161289396 is an apocalyptic number.

It is an amenable number.

18161289396 is an abundant number, since it is smaller than the sum of its proper divisors (28923535244).

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

18161289396 is a wasteful number, since it uses less digits than its factorization.

18161289396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168160100 (or 168160092 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The spelling of 18161289396 in words is "eighteen billion, one hundred sixty-one million, two hundred eighty-nine thousand, three hundred ninety-six".