4961553618 has 16 divisors (see below), whose sum is σ = 11340694080. Its totient is φ = 1417586736.

The previous prime is 4961553601. The next prime is 4961553643. The reversal of 4961553618 is 8163551694.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59066073 + ... + 59066156.

It is an arithmetic number, because the mean of its divisors is an integer number (708793380).

Almost surely, 2^4961553618 is an apocalyptic number.

4961553618 is an abundant number, since it is smaller than the sum of its proper divisors (6379140462).

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

4961553618 is a wasteful number, since it uses less digits than its factorization.

4961553618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118132241.

The product of its digits is 777600, while the sum is 48.

The square root of 4961553618 is about 70438.2965296578. The cubic root of 4961553618 is about 1705.5818389577.

The spelling of 4961553618 in words is "four billion, nine hundred sixty-one million, five hundred fifty-three thousand, six hundred eighteen".