990576163 has 2 divisors, whose sum is σ = 990576164. Its totient is φ = 990576162.

The previous prime is 990576151. The next prime is 990576221. The reversal of 990576163 is 361675099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990576163 - 2¹³ = 990567971 is a prime.

It is a super-2 number, since 2×990576163² = 1962482269407605138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (990576143) 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, 495288081 + 495288082.

It is an arithmetic number, because the mean of its divisors is an integer number (495288082).

Almost surely, 2^990576163 is an apocalyptic number.

990576163 is a deficient number, since it is larger than the sum of its proper divisors (1).

990576163 is an equidigital number, since it uses as much as digits as its factorization.

990576163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 990576163 is about 31473.4199444547. The cubic root of 990576163 is about 996.8488013778.

It can be divided in two parts, 9905 and 76163, that added together give a palindrome (86068).

The spelling of 990576163 in words is "nine hundred ninety million, five hundred seventy-six thousand, one hundred sixty-three".