1297671904 has 24 divisors (see below), whose sum is σ = 2637206208. Its totient is φ = 627905280.

The previous prime is 1297671889. The next prime is 1297671913. The reversal of 1297671904 is 4091767921.

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, 653077 + ... + 655060.

It is an arithmetic number, because the mean of its divisors is an integer number (109883592).

Almost surely, 2^1297671904 is an apocalyptic number.

It is an amenable number.

1297671904 is an abundant number, since it is smaller than the sum of its proper divisors (1339534304).

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

1297671904 is a wasteful number, since it uses less digits than its factorization.

1297671904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308178 (or 1308170 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 1297671904 is about 36023.2134046923. The cubic root of 1297671904 is about 1090.7409892967.

The spelling of 1297671904 in words is "one billion, two hundred ninety-seven million, six hundred seventy-one thousand, nine hundred four".