91948493013 has 8 divisors (see below), whose sum is σ = 132028605408. Its totient is φ = 56583687984.

The previous prime is 91948493009. The next prime is 91948493023. The reversal of 91948493013 is 31039484919.

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

It is not a de Polignac number, because 91948493013 - 2² = 91948493009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91948493023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178826795 + ... + 1178826872.

It is an arithmetic number, because the mean of its divisors is an integer number (16503575676).

Almost surely, 2^91948493013 is an apocalyptic number.

It is an amenable number.

91948493013 is a deficient number, since it is larger than the sum of its proper divisors (40080112395).

91948493013 is a wasteful number, since it uses less digits than its factorization.

91948493013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357653683.

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 91948493013 in words is "ninety-one billion, nine hundred forty-eight million, four hundred ninety-three thousand, thirteen".