18707049900 has 1152 divisors, whose sum is σ = 81594777600. Its totient is φ = 3558297600.

The previous prime is 18707049847. The next prime is 18707049901. The reversal of 18707049900 is 994070781.

It is a super-2 number, since 2×18707049900² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (18707049901) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 236798061 + ... + 236798139.

It is an arithmetic number, because the mean of its divisors is an integer number (70828800).

Almost surely, 2^18707049900 is an apocalyptic number.

18707049900 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 18707049900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40797388800).

18707049900 is an abundant number, since it is smaller than the sum of its proper divisors (62887727700).

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

18707049900 is a wasteful number, since it uses less digits than its factorization.

18707049900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 18707049900 in words is "eighteen billion, seven hundred seven million, forty-nine thousand, nine hundred".