49191005388 has 48 divisors (see below), whose sum is σ = 131262485760. Its totient is φ = 14045308224.

The previous prime is 49191005387. The next prime is 49191005393. The reversal of 49191005388 is 88350019194.

It is a super-2 number, since 2×49191005388² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49191005387) 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, 64323 + ... + 320186.

It is an arithmetic number, because the mean of its divisors is an integer number (2734635120).

Almost surely, 2^49191005388 is an apocalyptic number.

It is an amenable number.

49191005388 is an abundant number, since it is smaller than the sum of its proper divisors (82071480372).

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

49191005388 is a wasteful number, since it uses less digits than its factorization.

49191005388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386046 (or 386044 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 49191005388 in words is "forty-nine billion, one hundred ninety-one million, five thousand, three hundred eighty-eight".