91422536918 has 8 divisors (see below), whose sum is σ = 137199144600. Its totient is φ = 45689488720.

The previous prime is 91422536897. The next prime is 91422536923. The reversal of 91422536918 is 81963522419.

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, 10884623 + ... + 10893018.

It is an arithmetic number, because the mean of its divisors is an integer number (17149893075).

Almost surely, 2^91422536918 is an apocalyptic number.

91422536918 is a deficient number, since it is larger than the sum of its proper divisors (45776607682).

91422536918 is a wasteful number, since it uses less digits than its factorization.

91422536918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21779742.

The product of its digits is 933120, while the sum is 50.

The spelling of 91422536918 in words is "ninety-one billion, four hundred twenty-two million, five hundred thirty-six thousand, nine hundred eighteen".