961811516 has 48 divisors (see below), whose sum is σ = 1871989056. Its totient is φ = 430070784.

The previous prime is 961811507. The next prime is 961811561. The reversal of 961811516 is 615118169.

It is a self number, because there is not a number n which added to its sum of digits gives 961811516.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243590 + ... + 247506.

It is an arithmetic number, because the mean of its divisors is an integer number (38999772).

Almost surely, 2^961811516 is an apocalyptic number.

It is an amenable number.

961811516 is a deficient number, since it is larger than the sum of its proper divisors (910177540).

961811516 is a wasteful number, since it uses less digits than its factorization.

961811516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118 (or 4116 counting only the distinct ones).

The product of its digits is 12960, while the sum is 38.

The square root of 961811516 is about 31013.0862056649. The cubic root of 961811516 is about 987.1049374365.

The spelling of 961811516 in words is "nine hundred sixty-one million, eight hundred eleven thousand, five hundred sixteen".