1298391276 has 48 divisors (see below), whose sum is σ = 3728716544. Its totient is φ = 342432576.

The previous prime is 1298391247. The next prime is 1298391301. The reversal of 1298391276 is 6721938921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593410 + ... + 595593.

Almost surely, 2^1298391276 is an apocalyptic number.

It is an amenable number.

1298391276 is an abundant number, since it is smaller than the sum of its proper divisors (2430325268).

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

1298391276 is a wasteful number, since it uses less digits than its factorization.

1298391276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189030 (or 1189028 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 1298391276 is about 36033.1968606728. The cubic root of 1298391276 is about 1090.9425049437.

The spelling of 1298391276 in words is "one billion, two hundred ninety-eight million, three hundred ninety-one thousand, two hundred seventy-six".