1290713391 has 12 divisors (see below), whose sum is σ = 2033851560. Its totient is φ = 782250480.

The previous prime is 1290713371. The next prime is 1290713407. The reversal of 1290713391 is 1933170921.

It is a happy number.

It is not a de Polignac number, because 1290713391 - 2¹⁵ = 1290680623 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290713311) 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 11 ways as a sum of consecutive naturals, for example, 6518656 + ... + 6518853.

It is an arithmetic number, because the mean of its divisors is an integer number (169487630).

Almost surely, 2^1290713391 is an apocalyptic number.

1290713391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1290713391 is a deficient number, since it is larger than the sum of its proper divisors (743138169).

1290713391 is a wasteful number, since it uses less digits than its factorization.

1290713391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13037526 (or 13037523 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 1290713391 is about 35926.4998434303. The cubic root of 1290713391 is about 1088.7878652937.

The spelling of 1290713391 in words is "one billion, two hundred ninety million, seven hundred thirteen thousand, three hundred ninety-one".