961815416 has 32 divisors (see below), whose sum is σ = 1925078400. Its totient is φ = 449174880.

The previous prime is 961815391. The next prime is 961815419. The reversal of 961815416 is 614518169.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961815419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33770 + ... + 55353.

It is an arithmetic number, because the mean of its divisors is an integer number (60158700).

Almost surely, 2^961815416 is an apocalyptic number.

It is an amenable number.

961815416 is an abundant number, since it is smaller than the sum of its proper divisors (963262984).

961815416 is a wasteful number, since it uses less digits than its factorization.

961815416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89219 (or 89215 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 961815416 is about 31013.1490822844. The cubic root of 961815416 is about 987.1062716217.

The spelling of 961815416 in words is "nine hundred sixty-one million, eight hundred fifteen thousand, four hundred sixteen".