1631305552 has 20 divisors (see below), whose sum is σ = 3161283156. Its totient is φ = 815490560.

The previous prime is 1631305549. The next prime is 1631305561. The reversal of 1631305552 is 2555031361.

It can be written as a sum of positive squares in 2 ways, for example, as 941507856 + 689797696 = 30684^2 + 26264^2 .

It is a super-2 number, since 2×1631305552² = 5322315607972049408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 142008 + ... + 153064.

Almost surely, 2^1631305552 is an apocalyptic number.

It is an amenable number.

1631305552 is a deficient number, since it is larger than the sum of its proper divisors (1529977604).

1631305552 is a wasteful number, since it uses less digits than its factorization.

1631305552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20286 (or 20280 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 1631305552 is about 40389.4237641490. The cubic root of 1631305552 is about 1177.1860440798.

The spelling of 1631305552 in words is "one billion, six hundred thirty-one million, three hundred five thousand, five hundred fifty-two".