961914820 has 24 divisors (see below), whose sum is σ = 2020765824. Its totient is φ = 384624096.

The previous prime is 961914799. The next prime is 961914827. The reversal of 961914820 is 28419169.

It is not an unprimeable number, because it can be changed into a prime (961914827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59667 + ... + 74053.

It is an arithmetic number, because the mean of its divisors is an integer number (84198576).

Almost surely, 2^961914820 is an apocalyptic number.

It is an amenable number.

961914820 is an abundant number, since it is smaller than the sum of its proper divisors (1058851004).

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

961914820 is a wasteful number, since it uses less digits than its factorization.

961914820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17739 (or 17737 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 961914820 is about 31014.7516514319. The cubic root of 961914820 is about 987.1402763902.

The spelling of 961914820 in words is "nine hundred sixty-one million, nine hundred fourteen thousand, eight hundred twenty".