1290926664 has 48 divisors (see below), whose sum is σ = 3506068800. Its totient is φ = 429101664.

The previous prime is 1290926647. The next prime is 1290926683. The reversal of 1290926664 is 4666290921.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 877 + ... + 50819.

It is an arithmetic number, because the mean of its divisors is an integer number (73043100).

Almost surely, 2^1290926664 is an apocalyptic number.

It is an amenable number.

1290926664 is an abundant number, since it is smaller than the sum of its proper divisors (2215142136).

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

1290926664 is a wasteful number, since it uses less digits than its factorization.

1290926664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50314 (or 50307 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1290926664 is about 35929.4679058847. The cubic root of 1290926664 is about 1088.8478311667.

The spelling of 1290926664 in words is "one billion, two hundred ninety million, nine hundred twenty-six thousand, six hundred sixty-four".