1297343630 has 32 divisors (see below), whose sum is σ = 2549004768. Its totient is φ = 471484800.

The previous prime is 1297343563. The next prime is 1297343647. The reversal of 1297343630 is 363437921.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 334784 + ... + 338636.

It is an arithmetic number, because the mean of its divisors is an integer number (79656399).

Almost surely, 2^1297343630 is an apocalyptic number.

1297343630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1297343630 is a deficient number, since it is larger than the sum of its proper divisors (1251661138).

1297343630 is a wasteful number, since it uses less digits than its factorization.

1297343630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6932.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 1297343630 is about 36018.6566934415. The cubic root of 1297343630 is about 1090.6490060807.

The spelling of 1297343630 in words is "one billion, two hundred ninety-seven million, three hundred forty-three thousand, six hundred thirty".