49416131618 has 12 divisors (see below), whose sum is σ = 86226107382. Its totient is φ = 21178342080.

The previous prime is 49416131543. The next prime is 49416131657. The reversal of 49416131618 is 81613161494.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42183819769 + 7232311849 = 205387^2 + 85043^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252123023 + ... + 252123218.

Almost surely, 2^49416131618 is an apocalyptic number.

49416131618 is a deficient number, since it is larger than the sum of its proper divisors (36809975764).

49416131618 is a wasteful number, since it uses less digits than its factorization.

49416131618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504246257 (or 504246250 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The spelling of 49416131618 in words is "forty-nine billion, four hundred sixteen million, one hundred thirty-one thousand, six hundred eighteen".