91145926894 has 8 divisors (see below), whose sum is σ = 149147880408. Its totient is φ = 41429966760.

The previous prime is 91145926877. The next prime is 91145926909. The reversal of 91145926894 is 49862954119.

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, 2071498317 + ... + 2071498360.

It is an arithmetic number, because the mean of its divisors is an integer number (18643485051).

Almost surely, 2^91145926894 is an apocalyptic number.

91145926894 is a deficient number, since it is larger than the sum of its proper divisors (58001953514).

91145926894 is a wasteful number, since it uses less digits than its factorization.

91145926894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4142996690.

The product of its digits is 5598720, while the sum is 58.

The spelling of 91145926894 in words is "ninety-one billion, one hundred forty-five million, nine hundred twenty-six thousand, eight hundred ninety-four".