91090290094 has 8 divisors (see below), whose sum is σ = 141347001960. Its totient is φ = 43974622776.

The previous prime is 91090290091. The next prime is 91090290101. The reversal of 91090290094 is 49009209019.

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

It is a self number, because there is not a number n which added to its sum of digits gives 91090290094.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91090290091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785261064 + ... + 785261179.

It is an arithmetic number, because the mean of its divisors is an integer number (17668375245).

Almost surely, 2^91090290094 is an apocalyptic number.

91090290094 is a deficient number, since it is larger than the sum of its proper divisors (50256711866).

91090290094 is a wasteful number, since it uses less digits than its factorization.

91090290094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570522274.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 91090290094 in words is "ninety-one billion, ninety million, two hundred ninety thousand, ninety-four".