1914659664 has 20 divisors (see below), whose sum is σ = 4946204256. Its totient is φ = 638219872.

The previous prime is 1914659651. The next prime is 1914659671. The reversal of 1914659664 is 4669564191.

It is a happy number.

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, 19944324 + ... + 19944419.

Almost surely, 2^1914659664 is an apocalyptic number.

It is an amenable number.

1914659664 is an abundant number, since it is smaller than the sum of its proper divisors (3031544592).

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

1914659664 is a wasteful number, since it uses less digits than its factorization.

1914659664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39888754 (or 39888748 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 1914659664 is about 43756.8241992035. The cubic root of 1914659664 is about 1241.7395944574.

The spelling of 1914659664 in words is "one billion, nine hundred fourteen million, six hundred fifty-nine thousand, six hundred sixty-four".