91748670239 has 8 divisors (see below), whose sum is σ = 96864134640. Its totient is φ = 86661864576.

The previous prime is 91748670197. The next prime is 91748670241. The reversal of 91748670239 is 93207684719.

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

It is a cyclic number.

It is not a de Polignac number, because 91748670239 - 2³² = 87453702943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91748670259) 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, 7158104 + ... + 7170909.

It is an arithmetic number, because the mean of its divisors is an integer number (12108016830).

Almost surely, 2^91748670239 is an apocalyptic number.

91748670239 is a deficient number, since it is larger than the sum of its proper divisors (5115464401).

91748670239 is a wasteful number, since it uses less digits than its factorization.

91748670239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14329369.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 91748670239 in words is "ninety-one billion, seven hundred forty-eight million, six hundred seventy thousand, two hundred thirty-nine".