190491083993 has 16 divisors (see below), whose sum is σ = 218518915200. Its totient is φ = 162667201536.

The previous prime is 190491083953. The next prime is 190491084023. The reversal of 190491083993 is 399380194091.

It is not a de Polignac number, because 190491083993 - 2⁸ = 190491083737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190491083903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15740921 + ... + 15753017.

It is an arithmetic number, because the mean of its divisors is an integer number (13657432200).

Almost surely, 2^190491083993 is an apocalyptic number.

It is an amenable number.

190491083993 is a deficient number, since it is larger than the sum of its proper divisors (28027831207).

190491083993 is a wasteful number, since it uses less digits than its factorization.

190491083993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20336.

The product of its (nonzero) digits is 1889568, while the sum is 56.

The spelling of 190491083993 in words is "one hundred ninety billion, four hundred ninety-one million, eighty-three thousand, nine hundred ninety-three".