18889045870 has 8 divisors (see below), whose sum is σ = 34000282584. Its totient is φ = 7555618344.

The previous prime is 18889045859. The next prime is 18889045883. The reversal of 18889045870 is 7854098881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944452284 + ... + 944452303.

It is an arithmetic number, because the mean of its divisors is an integer number (4250035323).

Almost surely, 2^18889045870 is an apocalyptic number.

18889045870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18889045870 is a deficient number, since it is larger than the sum of its proper divisors (15111236714).

18889045870 is a wasteful number, since it uses less digits than its factorization.

18889045870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888904594.

The product of its (nonzero) digits is 5160960, while the sum is 58.

The spelling of 18889045870 in words is "eighteen billion, eight hundred eighty-nine million, forty-five thousand, eight hundred seventy".