49191919164 has 60 divisors (see below), whose sum is σ = 128676131584. Its totient is φ = 16387266816.

The previous prime is 49191919157. The next prime is 49191919331. The reversal of 49191919164 is 46191919194.

49191919164 is a `hidden beast` number, since 491 + 9 + 1 + 9 + 1 + 91 + 64 = 666.

It is a super-2 number, since 2×49191919164² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 49191919164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 493164 + ... + 584460.

Almost surely, 2^49191919164 is an apocalyptic number.

It is an amenable number.

49191919164 is an abundant number, since it is smaller than the sum of its proper divisors (79484212420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49191919164 is a wasteful number, since it uses less digits than its factorization.

49191919164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92976 (or 92965 counting only the distinct ones).

The product of its digits is 629856, while the sum is 54.

The spelling of 49191919164 in words is "forty-nine billion, one hundred ninety-one million, nine hundred nineteen thousand, one hundred sixty-four".