961338618 has 24 divisors (see below), whose sum is σ = 2160045888. Its totient is φ = 320446044.

The previous prime is 961338617. The next prime is 961338643. The reversal of 961338618 is 816833169.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (961338617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 988546 + ... + 989517.

It is an arithmetic number, because the mean of its divisors is an integer number (90001912).

Almost surely, 2^961338618 is an apocalyptic number.

961338618 is an abundant number, since it is smaller than the sum of its proper divisors (1198707270).

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

961338618 is a wasteful number, since it uses less digits than its factorization.

961338618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978080 (or 1978068 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 961338618 is about 31005.4610996192. The cubic root of 961338618 is about 986.9431328735.

The spelling of 961338618 in words is "nine hundred sixty-one million, three hundred thirty-eight thousand, six hundred eighteen".