1290970000 has 50 divisors (see below), whose sum is σ = 3125591678. Its totient is φ = 516384000.

The previous prime is 1290969989. The next prime is 1290970001. The reversal of 1290970000 is 790921.

It can be written as a sum of positive squares in 5 ways, for example, as 638269696 + 652700304 = 25264^2 + 25548^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (1290970001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 54549 + ... + 74548.

Almost surely, 2^1290970000 is an apocalyptic number.

1290970000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290970000 is an abundant number, since it is smaller than the sum of its proper divisors (1834621678).

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

1290970000 is an equidigital number, since it uses as much as digits as its factorization.

1290970000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129125 (or 129104 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1290970000 is about 35930.0709712631. The cubic root of 1290970000 is about 1088.8600151228.

The spelling of 1290970000 in words is "one billion, two hundred ninety million, nine hundred seventy thousand".