990113603 has 2 divisors, whose sum is σ = 990113604. Its totient is φ = 990113602.

The previous prime is 990113587. The next prime is 990113611. The reversal of 990113603 is 306311099.

It is a strong prime.

It is an emirp because it is prime and its reverse (306311099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990113603 - 2⁴ = 990113587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990113603.

It is not a weakly prime, because it can be changed into another prime (990113653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495056801 + 495056802.

It is an arithmetic number, because the mean of its divisors is an integer number (495056802).

Almost surely, 2^990113603 is an apocalyptic number.

990113603 is a deficient number, since it is larger than the sum of its proper divisors (1).

990113603 is an equidigital number, since it uses as much as digits as its factorization.

990113603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 990113603 is about 31466.0706634940. The cubic root of 990113603 is about 996.6936141949.

The spelling of 990113603 in words is "nine hundred ninety million, one hundred thirteen thousand, six hundred three".