1290492564 has 12 divisors (see below), whose sum is σ = 3011149344. Its totient is φ = 430164184.

The previous prime is 1290492551. The next prime is 1290492629. The reversal of 1290492564 is 4652940921.

It is a tau number, because it is divible by the number of its divisors (12).

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, 53770512 + ... + 53770535.

It is an arithmetic number, because the mean of its divisors is an integer number (250929112).

Almost surely, 2^1290492564 is an apocalyptic number.

It is an amenable number.

1290492564 is an abundant number, since it is smaller than the sum of its proper divisors (1720656780).

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

1290492564 is a wasteful number, since it uses less digits than its factorization.

1290492564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107541054 (or 107541052 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1290492564 is about 35923.4263955987. The cubic root of 1290492564 is about 1088.7257685047.

The spelling of 1290492564 in words is "one billion, two hundred ninety million, four hundred ninety-two thousand, five hundred sixty-four".