1297158445 has 16 divisors (see below), whose sum is σ = 1718563392. Its totient is φ = 932018560.

The previous prime is 1297158431. The next prime is 1297158479. The reversal of 1297158445 is 5448517921.

It is not a de Polignac number, because 1297158445 - 2²⁷ = 1162940717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1297158395 and 1297158404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137512 + ... + 146641.

It is an arithmetic number, because the mean of its divisors is an integer number (107410212).

Almost surely, 2^1297158445 is an apocalyptic number.

It is an amenable number.

1297158445 is a deficient number, since it is larger than the sum of its proper divisors (421404947).

1297158445 is a wasteful number, since it uses less digits than its factorization.

1297158445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284252.

The product of its digits is 403200, while the sum is 46.

The square root of 1297158445 is about 36016.0859200441. The cubic root of 1297158445 is about 1090.5971099235.

The spelling of 1297158445 in words is "one billion, two hundred ninety-seven million, one hundred fifty-eight thousand, four hundred forty-five".