990851268 has 48 divisors (see below), whose sum is σ = 2590346304. Its totient is φ = 292141440.

The previous prime is 990851237. The next prime is 990851269. The reversal of 990851268 is 862158099.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (990851269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96555 + ... + 106322.

It is an arithmetic number, because the mean of its divisors is an integer number (53965548).

Almost surely, 2^990851268 is an apocalyptic number.

It is an amenable number.

990851268 is an abundant number, since it is smaller than the sum of its proper divisors (1599495036).

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

990851268 is a wasteful number, since it uses less digits than its factorization.

990851268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202932 (or 202930 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 990851268 is about 31477.7900749084. The cubic root of 990851268 is about 996.9410751865.

It can be divided in two parts, 990 and 851268, that added together give a palindrome (852258).

The spelling of 990851268 in words is "nine hundred ninety million, eight hundred fifty-one thousand, two hundred sixty-eight".