990810418 has 8 divisors (see below), whose sum is σ = 1600539948. Its totient is φ = 457297104.

The previous prime is 990810413. The next prime is 990810419. The reversal of 990810418 is 814018099.

It can be written as a sum of positive squares in 2 ways, for example, as 967645449 + 23164969 = 31107^2 + 4813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (990810413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19054021 + ... + 19054072.

Almost surely, 2^990810418 is an apocalyptic number.

990810418 is a deficient number, since it is larger than the sum of its proper divisors (609729530).

990810418 is a wasteful number, since it uses less digits than its factorization.

990810418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38108108.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 990810418 is about 31477.1411980186. The cubic root of 990810418 is about 996.9273746430.

The spelling of 990810418 in words is "nine hundred ninety million, eight hundred ten thousand, four hundred eighteen".