1290971000 has 64 divisors (see below), whose sum is σ = 3295524960. Its totient is φ = 469440000.

The previous prime is 1290970981. The next prime is 1290971021. The reversal of 1290971000 is 1790921.

It is a super-2 number, since 2×1290971000² = 3333212245682000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47681 + ... + 69680.

Almost surely, 2^1290971000 is an apocalyptic number.

1290971000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290971000 is an abundant number, since it is smaller than the sum of its proper divisors (2004553960).

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

1290971000 is a wasteful number, since it uses less digits than its factorization.

1290971000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117393 (or 117379 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1290971000 is about 35930.0848871805. The cubic root of 1290971000 is about 1088.8602962705.

The spelling of 1290971000 in words is "one billion, two hundred ninety million, nine hundred seventy-one thousand".