921830650 has 24 divisors (see below), whose sum is σ = 1846499004. Its totient is φ = 340368000.

The previous prime is 921830629. The next prime is 921830653. The reversal of 921830650 is 56038129.

It can be written as a sum of positive squares in 6 ways, for example, as 109181601 + 812649049 = 10449^2 + 28507^2 .

It is not an unprimeable number, because it can be changed into a prime (921830653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708451 + ... + 709750.

Almost surely, 2^921830650 is an apocalyptic number.

921830650 is an abundant number, since it is smaller than the sum of its proper divisors (924668354).

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

921830650 is a wasteful number, since it uses less digits than its factorization.

921830650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418226 (or 1418221 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 921830650 is about 30361.6641507016. The cubic root of 921830650 is about 973.2334965414.

Adding to 921830650 its reverse (56038129), we get a palindrome (977868779).

The spelling of 921830650 in words is "nine hundred twenty-one million, eight hundred thirty thousand, six hundred fifty".