16138251900 has 108 divisors (see below), whose sum is σ = 51818339664. Its totient is φ = 4198560000.

The previous prime is 16138251797. The next prime is 16138251919. The reversal of 16138251900 is 915283161.

16138251900 is a `hidden beast` number, since 1 + 6 + 138 + 2 + 519 + 0 + 0 = 666.

It is a super-2 number, since 2×16138251900² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 181776 + ... + 255575.

Almost surely, 2^16138251900 is an apocalyptic number.

16138251900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16138251900 is an abundant number, since it is smaller than the sum of its proper divisors (35680087764).

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

16138251900 is a wasteful number, since it uses less digits than its factorization.

16138251900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437412 (or 437402 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 16138251900 in words is "sixteen billion, one hundred thirty-eight million, two hundred fifty-one thousand, nine hundred".