1297791452 has 12 divisors (see below), whose sum is σ = 2273066376. Its totient is φ = 648343920.

The previous prime is 1297791449. The next prime is 1297791457. The reversal of 1297791452 is 2541977921.

It is a junction number, because it is equal to n+sod(n) for n = 1297791397 and 1297791406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297791457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132638 + ... + 142085.

It is an arithmetic number, because the mean of its divisors is an integer number (189422198).

Almost surely, 2^1297791452 is an apocalyptic number.

It is an amenable number.

1297791452 is a deficient number, since it is larger than the sum of its proper divisors (975274924).

1297791452 is a wasteful number, since it uses less digits than its factorization.

1297791452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275908 (or 275906 counting only the distinct ones).

The product of its digits is 317520, while the sum is 47.

The square root of 1297791452 is about 36024.8726854100. The cubic root of 1297791452 is about 1090.7744830993.

The spelling of 1297791452 in words is "one billion, two hundred ninety-seven million, seven hundred ninety-one thousand, four hundred fifty-two".