16381185090 has 32 divisors (see below), whose sum is σ = 39406093056. Its totient is φ = 4358177280.

The previous prime is 16381185061. The next prime is 16381185113. The reversal of 16381185090 is 9058118361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620527 + ... + 646386.

It is an arithmetic number, because the mean of its divisors is an integer number (1231440408).

Almost surely, 2^16381185090 is an apocalyptic number.

16381185090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16381185090 is an abundant number, since it is smaller than the sum of its proper divisors (23024907966).

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

16381185090 is a wasteful number, since it uses less digits than its factorization.

16381185090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267354.

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 16381185090 in words is "sixteen billion, three hundred eighty-one million, one hundred eighty-five thousand, ninety".