49161518 has 32 divisors (see below), whose sum is σ = 90595584. Its totient is φ = 19527552.

The previous prime is 49161517. The next prime is 49161527. The reversal of 49161518 is 81516194.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49161517) 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, 14405 + ... + 17487.

It is an arithmetic number, because the mean of its divisors is an integer number (2831112).

Almost surely, 2^49161518 is an apocalyptic number.

49161518 is a deficient number, since it is larger than the sum of its proper divisors (41434066).

49161518 is a wasteful number, since it uses less digits than its factorization.

49161518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176.

The product of its digits is 8640, while the sum is 35.

The square root of 49161518 is about 7011.5275083251. The cubic root of 49161518 is about 366.3322006009.

The spelling of 49161518 in words is "forty-nine million, one hundred sixty-one thousand, five hundred eighteen".