1631016459 has 8 divisors (see below), whose sum is σ = 2416320720. Its totient is φ = 1087344288.

The previous prime is 1631016427. The next prime is 1631016461. The reversal of 1631016459 is 9546101361.

1631016459 is a `hidden beast` number, since 1 + 6 + 3 + 1 + 0 + 1 + 645 + 9 = 666.

It is not a de Polignac number, because 1631016459 - 2⁵ = 1631016427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1631016479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30203982 + ... + 30204035.

It is an arithmetic number, because the mean of its divisors is an integer number (302040090).

Almost surely, 2^1631016459 is an apocalyptic number.

1631016459 is a deficient number, since it is larger than the sum of its proper divisors (785304261).

1631016459 is an equidigital number, since it uses as much as digits as its factorization.

1631016459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60408026 (or 60408020 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1631016459 is about 40385.8447850234. The cubic root of 1631016459 is about 1177.1165013446.

The spelling of 1631016459 in words is "one billion, six hundred thirty-one million, sixteen thousand, four hundred fifty-nine".