49164138 has 16 divisors (see below), whose sum is σ = 109253760. Its totient is φ = 16388028.

The previous prime is 49164127. The next prime is 49164139. The reversal of 49164138 is 83146194.

49164138 is a `hidden beast` number, since 4 + 9 + 1 + 641 + 3 + 8 = 666.

It is a super-2 number, since 2×49164138² = 4834224930566088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (49164139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455170 + ... + 455277.

It is an arithmetic number, because the mean of its divisors is an integer number (6828360).

Almost surely, 2^49164138 is an apocalyptic number.

49164138 is an abundant number, since it is smaller than the sum of its proper divisors (60089622).

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

49164138 is a wasteful number, since it uses less digits than its factorization.

49164138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910458 (or 910452 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 49164138 is about 7011.7143410153. The cubic root of 49164138 is about 366.3387082201.

The spelling of 49164138 in words is "forty-nine million, one hundred sixty-four thousand, one hundred thirty-eight".