990701188 has 6 divisors (see below), whose sum is σ = 1733727086. Its totient is φ = 495350592.

The previous prime is 990701167. The next prime is 990701189. The reversal of 990701188 is 881107099.

It can be written as a sum of positive squares in only one way, i.e., 666052864 + 324648324 = 25808^2 + 18018^2 .

It is a super-2 number, since 2×990701188² = 1962977687809222688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (990701189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123837645 + ... + 123837652.

Almost surely, 2^990701188 is an apocalyptic number.

It is an amenable number.

990701188 is a deficient number, since it is larger than the sum of its proper divisors (743025898).

990701188 is a wasteful number, since it uses less digits than its factorization.

990701188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247675301 (or 247675299 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 990701188 is about 31475.4060815742. The cubic root of 990701188 is about 996.8907385126.

It can be divided in two parts, 9907011 and 88, that added together give a palindrome (9907099).

The spelling of 990701188 in words is "nine hundred ninety million, seven hundred one thousand, one hundred eighty-eight".