49244635618 has 4 divisors (see below), whose sum is σ = 73866953430. Its totient is φ = 24622317808.

The previous prime is 49244635603. The next prime is 49244635631. The reversal of 49244635618 is 81653644294.

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

It can be written as a sum of positive squares in only one way, i.e., 49207217929 + 37417689 = 221827^2 + 6117^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12311158903 + ... + 12311158906.

Almost surely, 2^49244635618 is an apocalyptic number.

49244635618 is a deficient number, since it is larger than the sum of its proper divisors (24622317812).

49244635618 is a wasteful number, since it uses less digits than its factorization.

49244635618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24622317811.

The product of its digits is 4976640, while the sum is 52.

The spelling of 49244635618 in words is "forty-nine billion, two hundred forty-four million, six hundred thirty-five thousand, six hundred eighteen".