961361872 has 20 divisors (see below), whose sum is σ = 1863119716. Its totient is φ = 480556800.

The previous prime is 961361839. The next prime is 961361873. The reversal of 961361872 is 278163169.

It can be written as a sum of positive squares in 2 ways, for example, as 909866896 + 51494976 = 30164^2 + 7176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961361873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114622 + ... + 122722.

Almost surely, 2^961361872 is an apocalyptic number.

It is an amenable number.

961361872 is a deficient number, since it is larger than the sum of its proper divisors (901757844).

961361872 is a wasteful number, since it uses less digits than its factorization.

961361872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15526 (or 15520 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 961361872 is about 31005.8360958062. The cubic root of 961361872 is about 986.9510905935.

The spelling of 961361872 in words is "nine hundred sixty-one million, three hundred sixty-one thousand, eight hundred seventy-two".