16387493800 has 24 divisors (see below), whose sum is σ = 38100923550. Its totient is φ = 6554997440.

The previous prime is 16387493789. The next prime is 16387493851. The reversal of 16387493800 is 839478361.

It is a happy number.

16387493800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 15958258276 + 429235524 = 126326^2 + 20718^2 .

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 5 ways as a sum of consecutive naturals, for example, 40968535 + ... + 40968934.

Almost surely, 2^16387493800 is an apocalyptic number.

16387493800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16387493800 is an abundant number, since it is smaller than the sum of its proper divisors (21713429750).

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

16387493800 is a wasteful number, since it uses less digits than its factorization.

16387493800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81937485 (or 81937476 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 16387493800 in words is "sixteen billion, three hundred eighty-seven million, four hundred ninety-three thousand, eight hundred".