1631148964 has 12 divisors (see below), whose sum is σ = 2952942300. Its totient is φ = 787451168.

The previous prime is 1631148947. The next prime is 1631148991. The reversal of 1631148964 is 4698411361.

It can be written as a sum of positive squares in 2 ways, for example, as 606636900 + 1024512064 = 24630^2 + 32008^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1631148964.

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, 7030699 + ... + 7030930.

It is an arithmetic number, because the mean of its divisors is an integer number (246078525).

Almost surely, 2^1631148964 is an apocalyptic number.

It is an amenable number.

1631148964 is a deficient number, since it is larger than the sum of its proper divisors (1321793336).

1631148964 is a wasteful number, since it uses less digits than its factorization.

1631148964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14061662 (or 14061660 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 1631148964 is about 40387.4852398611. The cubic root of 1631148964 is about 1177.1483770905.

The spelling of 1631148964 in words is "one billion, six hundred thirty-one million, one hundred forty-eight thousand, nine hundred sixty-four".