18697383376 has 80 divisors (see below), whose sum is σ = 43248446208. Its totient is φ = 7656422400.

The previous prime is 18697383373. The next prime is 18697383389. The reversal of 18697383376 is 67338379681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18697383373) 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, 2729716 + ... + 2736556.

Almost surely, 2^18697383376 is an apocalyptic number.

18697383376 is a gapful number since it is divisible by the number (16) 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 18697383376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21624223104).

18697383376 is an abundant number, since it is smaller than the sum of its proper divisors (24551062832).

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

18697383376 is a wasteful number, since it uses less digits than its factorization.

18697383376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940 (or 7934 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 61.

The spelling of 18697383376 in words is "eighteen billion, six hundred ninety-seven million, three hundred eighty-three thousand, three hundred seventy-six".