49797013919 has 4 divisors (see below), whose sum is σ = 51514152360. Its totient is φ = 48079875480.

The previous prime is 49797013901. The next prime is 49797013927. The reversal of 49797013919 is 91931079794.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49797013919 is a prime.

It is a super-2 number, since 2×49797013919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49797213919) 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, 858569177 + ... + 858569234.

It is an arithmetic number, because the mean of its divisors is an integer number (12878538090).

Almost surely, 2^49797013919 is an apocalyptic number.

49797013919 is a deficient number, since it is larger than the sum of its proper divisors (1717138441).

49797013919 is a wasteful number, since it uses less digits than its factorization.

49797013919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717138440.

The product of its (nonzero) digits is 3857868, while the sum is 59.

The spelling of 49797013919 in words is "forty-nine billion, seven hundred ninety-seven million, thirteen thousand, nine hundred nineteen".