1290978597 has 16 divisors (see below), whose sum is σ = 1744823808. Its totient is φ = 848926320.

The previous prime is 1290978593. The next prime is 1290978631. The reversal of 1290978597 is 7958790921.

It is not a de Polignac number, because 1290978597 - 2² = 1290978593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290978593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166272 + ... + 173862.

It is an arithmetic number, because the mean of its divisors is an integer number (109051488).

Almost surely, 2^1290978597 is an apocalyptic number.

It is an amenable number.

1290978597 is a deficient number, since it is larger than the sum of its proper divisors (453845211).

1290978597 is an equidigital number, since it uses as much as digits as its factorization.

1290978597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8360.

The product of its (nonzero) digits is 2857680, while the sum is 57.

The square root of 1290978597 is about 35930.1906062297. The cubic root of 1290978597 is about 1088.8624321448.

The spelling of 1290978597 in words is "one billion, two hundred ninety million, nine hundred seventy-eight thousand, five hundred ninety-seven".