91803954323 has 4 divisors (see below), whose sum is σ = 91859159808. Its totient is φ = 91748748840.

The previous prime is 91803954299. The next prime is 91803954329. The reversal of 91803954323 is 32345930819.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91803954323 - 2²⁴ = 91787177107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91803954329) 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, 27600248 + ... + 27603573.

It is an arithmetic number, because the mean of its divisors is an integer number (22964789952).

Almost surely, 2^91803954323 is an apocalyptic number.

91803954323 is a deficient number, since it is larger than the sum of its proper divisors (55205485).

91803954323 is a wasteful number, since it uses less digits than its factorization.

91803954323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55205484.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 91803954323 in words is "ninety-one billion, eight hundred three million, nine hundred fifty-four thousand, three hundred twenty-three".