1631748963 has 32 divisors (see below), whose sum is σ = 2387402752. Its totient is φ = 985219200.

The previous prime is 1631748949. The next prime is 1631748971. The reversal of 1631748963 is 3698471361.

It is a happy number.

It is not a de Polignac number, because 1631748963 - 2⁵ = 1631748931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631748913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1500606 + ... + 1501692.

It is an arithmetic number, because the mean of its divisors is an integer number (74606336).

Almost surely, 2^1631748963 is an apocalyptic number.

1631748963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1631748963 is a deficient number, since it is larger than the sum of its proper divisors (755653789).

1631748963 is a wasteful number, since it uses less digits than its factorization.

1631748963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795.

The product of its digits is 653184, while the sum is 48.

The square root of 1631748963 is about 40394.9125880970. The cubic root of 1631748963 is about 1177.2926928014.

The spelling of 1631748963 in words is "one billion, six hundred thirty-one million, seven hundred forty-eight thousand, nine hundred sixty-three".