916531161 has 64 divisors (see below), whose sum is σ = 1562566656. Its totient is φ = 465004800.

The previous prime is 916531153. The next prime is 916531201. The reversal of 916531161 is 161135619.

It is not a de Polignac number, because 916531161 - 2³ = 916531153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (916531141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 782106 + ... + 783276.

It is an arithmetic number, because the mean of its divisors is an integer number (24415104).

Almost surely, 2^916531161 is an apocalyptic number.

916531161 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

916531161 is a deficient number, since it is larger than the sum of its proper divisors (646035495).

916531161 is a wasteful number, since it uses less digits than its factorization.

916531161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302.

The product of its digits is 4860, while the sum is 33.

The square root of 916531161 is about 30274.2656558338. The cubic root of 916531161 is about 971.3649120244.

The spelling of 916531161 in words is "nine hundred sixteen million, five hundred thirty-one thousand, one hundred sixty-one".