1297004845 has 48 divisors (see below), whose sum is σ = 1732394160. Its totient is φ = 930327552.

The previous prime is 1297004837. The next prime is 1297004861. The reversal of 1297004845 is 5484007921.

It can be written as a sum of positive squares in 8 ways, for example, as 172475689 + 1124529156 = 13133^2 + 33534^2 .

It is not a de Polignac number, because 1297004845 - 2³ = 1297004837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1297004798 and 1297004807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2837857 + ... + 2838313.

It is an arithmetic number, because the mean of its divisors is an integer number (36091545).

Almost surely, 2^1297004845 is an apocalyptic number.

It is an amenable number.

1297004845 is a deficient number, since it is larger than the sum of its proper divisors (435389315).

1297004845 is a wasteful number, since it uses less digits than its factorization.

1297004845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1297004845 is about 36013.9534763958. The cubic root of 1297004845 is about 1090.5540613843.

The spelling of 1297004845 in words is "one billion, two hundred ninety-seven million, four thousand, eight hundred forty-five".