49618915 has 4 divisors (see below), whose sum is σ = 59542704. Its totient is φ = 39695128.

The previous prime is 49618901. The next prime is 49618939. The reversal of 49618915 is 51981694.

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

It is a cyclic number.

It is not a de Polignac number, because 49618915 - 2⁷ = 49618787 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4961887 + ... + 4961896.

It is an arithmetic number, because the mean of its divisors is an integer number (14885676).

Almost surely, 2^49618915 is an apocalyptic number.

49618915 is a deficient number, since it is larger than the sum of its proper divisors (9923789).

49618915 is an equidigital number, since it uses as much as digits as its factorization.

49618915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9923788.

The product of its digits is 77760, while the sum is 43.

The square root of 49618915 is about 7044.0694914233. The cubic root of 49618915 is about 367.4648091313.

The spelling of 49618915 in words is "forty-nine million, six hundred eighteen thousand, nine hundred fifteen".