1290201892 has 24 divisors (see below), whose sum is σ = 2598975680. Its totient is φ = 548964000.

The previous prime is 1290201889. The next prime is 1290201901. The reversal of 1290201892 is 2981020921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161859 + ... + 169642.

Almost surely, 2^1290201892 is an apocalyptic number.

It is an amenable number.

1290201892 is an abundant number, since it is smaller than the sum of its proper divisors (1308773788).

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

1290201892 is a wasteful number, since it uses less digits than its factorization.

1290201892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331651 (or 331649 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 1290201892 is about 35919.3804512272. The cubic root of 1290201892 is about 1088.6440204269.

The spelling of 1290201892 in words is "one billion, two hundred ninety million, two hundred one thousand, eight hundred ninety-two".