89190161918 has 16 divisors (see below), whose sum is σ = 157174271856. Its totient is φ = 37422445440.

The previous prime is 89190161869. The next prime is 89190161927. The reversal of 89190161918 is 81916109198.

It is a self number, because there is not a number n which added to its sum of digits gives 89190161918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155926571 + ... + 155927142.

It is an arithmetic number, because the mean of its divisors is an integer number (9823391991).

Almost surely, 2^89190161918 is an apocalyptic number.

89190161918 is a deficient number, since it is larger than the sum of its proper divisors (67984109938).

89190161918 is a wasteful number, since it uses less digits than its factorization.

89190161918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311853739.

The product of its (nonzero) digits is 279936, while the sum is 53.

The spelling of 89190161918 in words is "eighty-nine billion, one hundred ninety million, one hundred sixty-one thousand, nine hundred eighteen".