18650161392 has 80 divisors (see below), whose sum is σ = 49518294912. Its totient is φ = 6044232960.

The previous prime is 18650161367. The next prime is 18650161393. The reversal of 18650161392 is 29316105681.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18650161393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3099667 + ... + 3105677.

Almost surely, 2^18650161392 is an apocalyptic number.

18650161392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18650161392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24759147456).

18650161392 is an abundant number, since it is smaller than the sum of its proper divisors (30868133520).

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

18650161392 is a wasteful number, since it uses less digits than its factorization.

18650161392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806 (or 7800 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 18650161392 in words is "eighteen billion, six hundred fifty million, one hundred sixty-one thousand, three hundred ninety-two".