1631282988 has 24 divisors (see below), whose sum is σ = 3810941680. Its totient is φ = 543101760.

The previous prime is 1631282977. The next prime is 1631282993. The reversal of 1631282988 is 8892821361.

1631282988 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1631282988² = 5322168373876416288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72043 + ... + 91938.

Almost surely, 2^1631282988 is an apocalyptic number.

It is an amenable number.

1631282988 is an abundant number, since it is smaller than the sum of its proper divisors (2179658692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631282988 is a wasteful number, since it uses less digits than its factorization.

1631282988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164817 (or 164815 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 1631282988 is about 40389.1444326319. The cubic root of 1631282988 is about 1177.1806164949.

The spelling of 1631282988 in words is "one billion, six hundred thirty-one million, two hundred eighty-two thousand, nine hundred eighty-eight".