91918383003 has 6 divisors (see below), whose sum is σ = 132770997684. Its totient is φ = 61278921996.

The previous prime is 91918382971. The next prime is 91918383013. The reversal of 91918383003 is 30038381919.

It is a happy number.

It is not a de Polignac number, because 91918383003 - 2⁵ = 91918382971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91918383003.

It is not an unprimeable number, because it can be changed into a prime (91918383013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5106576825 + ... + 5106576842.

It is an arithmetic number, because the mean of its divisors is an integer number (22128499614).

Almost surely, 2^91918383003 is an apocalyptic number.

91918383003 is a deficient number, since it is larger than the sum of its proper divisors (40852614681).

91918383003 is a wasteful number, since it uses less digits than its factorization.

91918383003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10213153673 (or 10213153670 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 91918383003 in words is "ninety-one billion, nine hundred eighteen million, three hundred eighty-three thousand, three".