16389281900 has 36 divisors (see below), whose sum is σ = 35581727832. Its totient is φ = 6552581760.

The previous prime is 16389281897. The next prime is 16389281911. The reversal of 16389281900 is 918298361.

It is a super-2 number, since 2×16389281900² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177239 + ... + 253361.

Almost surely, 2^16389281900 is an apocalyptic number.

16389281900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16389281900 is an abundant number, since it is smaller than the sum of its proper divisors (19192445932).

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

16389281900 is a wasteful number, since it uses less digits than its factorization.

16389281900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78290 (or 78283 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 16389281900 in words is "sixteen billion, three hundred eighty-nine million, two hundred eighty-one thousand, nine hundred".