1297989275 has 96 divisors (see below), whose sum is σ = 1942375680. Its totient is φ = 850176000.

The previous prime is 1297989263. The next prime is 1297989307. The reversal of 1297989275 is 5729897921.

It is not a de Polignac number, because 1297989275 - 2¹² = 1297985179 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15638384 + ... + 15638466.

It is an arithmetic number, because the mean of its divisors is an integer number (20233080).

Almost surely, 2^1297989275 is an apocalyptic number.

1297989275 is a deficient number, since it is larger than the sum of its proper divisors (644386405).

1297989275 is a wasteful number, since it uses less digits than its factorization.

1297989275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 232 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 59.

The square root of 1297989275 is about 36027.6182254670. The cubic root of 1297989275 is about 1090.8299027168.

The spelling of 1297989275 in words is "one billion, two hundred ninety-seven million, nine hundred eighty-nine thousand, two hundred seventy-five".