15000081894 has 48 divisors (see below), whose sum is σ = 37560425760. Its totient is φ = 4237580160.

The previous prime is 15000081893. The next prime is 15000081919. The reversal of 15000081894 is 49818000051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000081893) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 657597 + ... + 680024.

It is an arithmetic number, because the mean of its divisors is an integer number (782508870).

Almost surely, 2^15000081894 is an apocalyptic number.

15000081894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15000081894 is an abundant number, since it is smaller than the sum of its proper divisors (22560343866).

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

15000081894 is a wasteful number, since it uses less digits than its factorization.

15000081894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337725 (or 1337722 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 15000081894 in words is "fifteen billion, eighty-one thousand, eight hundred ninety-four".