961158744 has 256 divisors, whose sum is σ = 3323980800. Its totient is φ = 250573824.

The previous prime is 961158743. The next prime is 961158769. The reversal of 961158744 is 447851169.

961158744 is a `hidden beast` number, since 9 + 61 + 1 + 587 + 4 + 4 = 666.

It is a super-2 number, since 2×961158744² = 1847652262335315072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 961158744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961158743) 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, 2102964 + ... + 2103420.

It is an arithmetic number, because the mean of its divisors is an integer number (12984300).

Almost surely, 2^961158744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 961158744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661990400).

961158744 is an abundant number, since it is smaller than the sum of its proper divisors (2362822056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

961158744 is a wasteful number, since it uses less digits than its factorization.

961158744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 589 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 961158744 is about 31002.5602813703. The cubic root of 961158744 is about 986.8815740987.

The spelling of 961158744 in words is "nine hundred sixty-one million, one hundred fifty-eight thousand, seven hundred forty-four".