961287158 has 48 divisors (see below), whose sum is σ = 1616811840. Its totient is φ = 426069504.

The previous prime is 961287149. The next prime is 961287179. The reversal of 961287158 is 851782169.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4022003 + ... + 4022241.

It is an arithmetic number, because the mean of its divisors is an integer number (33683580).

Almost surely, 2^961287158 is an apocalyptic number.

961287158 is a deficient number, since it is larger than the sum of its proper divisors (655524682).

961287158 is a wasteful number, since it uses less digits than its factorization.

961287158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 404 counting only the distinct ones).

The product of its digits is 241920, while the sum is 47.

The square root of 961287158 is about 31004.6312347043. The cubic root of 961287158 is about 986.9255223601.

The spelling of 961287158 in words is "nine hundred sixty-one million, two hundred eighty-seven thousand, one hundred fifty-eight".