18899003136 has 288 divisors, whose sum is σ = 56060117568. Its totient is φ = 5615124480.

The previous prime is 18899003113. The next prime is 18899003161. The reversal of 18899003136 is 63130099881.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56079960 + ... + 56080296.

It is an arithmetic number, because the mean of its divisors is an integer number (194653186).

Almost surely, 2^18899003136 is an apocalyptic number.

18899003136 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 18899003136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28030058784).

18899003136 is an abundant number, since it is smaller than the sum of its proper divisors (37161114432).

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

18899003136 is a wasteful number, since it uses less digits than its factorization.

18899003136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 18899003136 in words is "eighteen billion, eight hundred ninety-nine million, three thousand, one hundred thirty-six".