1631948956 has 12 divisors (see below), whose sum is σ = 3115539000. Its totient is φ = 741794960.

The previous prime is 1631948947. The next prime is 1631948999. The reversal of 1631948956 is 6598491361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18544831 + ... + 18544918.

It is an arithmetic number, because the mean of its divisors is an integer number (259628250).

Almost surely, 2^1631948956 is an apocalyptic number.

It is an amenable number.

1631948956 is a deficient number, since it is larger than the sum of its proper divisors (1483590044).

1631948956 is a wasteful number, since it uses less digits than its factorization.

1631948956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37089764 (or 37089762 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 1631948956 is about 40397.3879848685. The cubic root of 1631948956 is about 1177.3407885735.

The spelling of 1631948956 in words is "one billion, six hundred thirty-one million, nine hundred forty-eight thousand, nine hundred fifty-six".