961810090 has 32 divisors (see below), whose sum is σ = 1814192640. Its totient is φ = 366436224.

The previous prime is 961810081. The next prime is 961810093. The reversal of 961810090 is 90018169.

It is not an unprimeable number, because it can be changed into a prime (961810093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46222 + ... + 63718.

It is an arithmetic number, because the mean of its divisors is an integer number (56693520).

Almost surely, 2^961810090 is an apocalyptic number.

961810090 is a deficient number, since it is larger than the sum of its proper divisors (852382550).

961810090 is a wasteful number, since it uses less digits than its factorization.

961810090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17766.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 961810090 is about 31013.0632153614. The cubic root of 961810090 is about 987.1044496027.

The spelling of 961810090 in words is "nine hundred sixty-one million, eight hundred ten thousand, ninety".