2991689259 has 16 divisors (see below), whose sum is σ = 4296768000. Its totient is φ = 1840607136.

The previous prime is 2991689243. The next prime is 2991689263. The reversal of 2991689259 is 9529861992.

It is not a de Polignac number, because 2991689259 - 2⁴ = 2991689243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2991689209) 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, 263502 + ... + 274620.

It is an arithmetic number, because the mean of its divisors is an integer number (268548000).

Almost surely, 2^2991689259 is an apocalyptic number.

2991689259 is a deficient number, since it is larger than the sum of its proper divisors (1305078741).

2991689259 is a wasteful number, since it uses less digits than its factorization.

2991689259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18034.

The product of its digits is 6298560, while the sum is 60.

The square root of 2991689259 is about 54696.3367969008. The cubic root of 2991689259 is about 1440.9165427616.

The spelling of 2991689259 in words is "two billion, nine hundred ninety-one million, six hundred eighty-nine thousand, two hundred fifty-nine".