1297906383 has 4 divisors (see below), whose sum is σ = 1730541848. Its totient is φ = 865270920.

The previous prime is 1297906349. The next prime is 1297906403. The reversal of 1297906383 is 3836097921.

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

It is not a de Polignac number, because 1297906383 - 2¹⁰ = 1297905359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297946383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216317728 + ... + 216317733.

It is an arithmetic number, because the mean of its divisors is an integer number (432635462).

Almost surely, 2^1297906383 is an apocalyptic number.

1297906383 is a deficient number, since it is larger than the sum of its proper divisors (432635465).

1297906383 is an equidigital number, since it uses as much as digits as its factorization.

1297906383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432635464.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 1297906383 is about 36026.4678118741. The cubic root of 1297906383 is about 1090.8066814162.

The spelling of 1297906383 in words is "one billion, two hundred ninety-seven million, nine hundred six thousand, three hundred eighty-three".