1291080933 has 6 divisors (see below), whose sum is σ = 1864894694. Its totient is φ = 860720616.

The previous prime is 1291080881. The next prime is 1291080943. The reversal of 1291080933 is 3390801921.

It can be written as a sum of positive squares in only one way, i.e., 747584964 + 543495969 = 27342^2 + 23313^2 .

It is not a de Polignac number, because 1291080933 - 2¹² = 1291076837 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 (1291080943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71726710 + ... + 71726727.

Almost surely, 2^1291080933 is an apocalyptic number.

It is an amenable number.

1291080933 is a deficient number, since it is larger than the sum of its proper divisors (573813761).

1291080933 is a wasteful number, since it uses less digits than its factorization.

1291080933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143453443 (or 143453440 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1291080933 is about 35931.6146728755. The cubic root of 1291080933 is about 1088.8912027952.

The spelling of 1291080933 in words is "one billion, two hundred ninety-one million, eighty thousand, nine hundred thirty-three".