1297473673 has 4 divisors (see below), whose sum is σ = 1306181700. Its totient is φ = 1288765648.

The previous prime is 1297473629. The next prime is 1297473713. The reversal of 1297473673 is 3763747921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235561104 + 1061912569 = 15348^2 + 32587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297473673 - 2²⁹ = 760602761 is a prime.

It is a super-2 number, since 2×1297473673² = 3366875864256221858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1297473623) 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, 4353790 + ... + 4354087.

It is an arithmetic number, because the mean of its divisors is an integer number (326545425).

Almost surely, 2^1297473673 is an apocalyptic number.

It is an amenable number.

1297473673 is a deficient number, since it is larger than the sum of its proper divisors (8708027).

1297473673 is an equidigital number, since it uses as much as digits as its factorization.

1297473673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708026.

The product of its digits is 1333584, while the sum is 49.

The square root of 1297473673 is about 36020.4618654453. The cubic root of 1297473673 is about 1090.6854463182.

The spelling of 1297473673 in words is "one billion, two hundred ninety-seven million, four hundred seventy-three thousand, six hundred seventy-three".