1648909964 has 48 divisors (see below), whose sum is σ = 3253211136. Its totient is φ = 726062400.

The previous prime is 1648909957. The next prime is 1648909973. The reversal of 1648909964 is 4699098461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107249 + ... + 121655.

It is an arithmetic number, because the mean of its divisors is an integer number (67775232).

Almost surely, 2^1648909964 is an apocalyptic number.

It is an amenable number.

1648909964 is a deficient number, since it is larger than the sum of its proper divisors (1604301172).

1648909964 is a wasteful number, since it uses less digits than its factorization.

1648909964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14526 (or 14524 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 1648909964 is about 40606.7723908217. The cubic root of 1648909964 is about 1181.4054793656.

The spelling of 1648909964 in words is "one billion, six hundred forty-eight million, nine hundred nine thousand, nine hundred sixty-four".