18973267700 has 72 divisors (see below), whose sum is σ = 41987666784. Its totient is φ = 7440048000.

The previous prime is 18973267693. The next prime is 18973267717. The reversal of 18973267700 is 776237981.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1406990 + ... + 1420410.

Almost surely, 2^18973267700 is an apocalyptic number.

18973267700 is a gapful number since it is divisible by the number (10) 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 18973267700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20993833392).

18973267700 is an abundant number, since it is smaller than the sum of its proper divisors (23014399084).

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

18973267700 is a wasteful number, since it uses less digits than its factorization.

18973267700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13713 (or 13706 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 18973267700 in words is "eighteen billion, nine hundred seventy-three million, two hundred sixty-seven thousand, seven hundred".