961788330 has 80 divisors (see below), whose sum is σ = 2669635584. Its totient is φ = 248196960.

The previous prime is 961788329. The next prime is 961788367. The reversal of 961788330 is 33887169.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5959 + ... + 44261.

Almost surely, 2^961788330 is an apocalyptic number.

961788330 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 961788330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334817792).

961788330 is an abundant number, since it is smaller than the sum of its proper divisors (1707847254).

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

961788330 is a wasteful number, since it uses less digits than its factorization.

961788330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38353 (or 38344 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 961788330 is about 31012.7123934686. The cubic root of 961788330 is about 987.0970054600.

The spelling of 961788330 in words is "nine hundred sixty-one million, seven hundred eighty-eight thousand, three hundred thirty".