1296591951 has 16 divisors (see below), whose sum is σ = 1750939520. Its totient is φ = 853377120.

The previous prime is 1296591941. The next prime is 1296591953. The reversal of 1296591951 is 1591956921.

It is not a de Polignac number, because 1296591951 - 2⁷ = 1296591823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1296591951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296591953) 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, 85536 + ... + 99546.

It is an arithmetic number, because the mean of its divisors is an integer number (109433720).

Almost surely, 2^1296591951 is an apocalyptic number.

1296591951 is a deficient number, since it is larger than the sum of its proper divisors (454347569).

1296591951 is a wasteful number, since it uses less digits than its factorization.

1296591951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14406.

The product of its digits is 218700, while the sum is 48.

The square root of 1296591951 is about 36008.2206030790. The cubic root of 1296591951 is about 1090.4383252403.

The spelling of 1296591951 in words is "one billion, two hundred ninety-six million, five hundred ninety-one thousand, nine hundred fifty-one".