2691901259 has 2 divisors, whose sum is σ = 2691901260. Its totient is φ = 2691901258.

The previous prime is 2691901253. The next prime is 2691901283. The reversal of 2691901259 is 9521091962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2691901259 - 2⁴ = 2691901243 is a prime.

It is not a weakly prime, because it can be changed into another prime (2691901253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345950629 + 1345950630.

It is an arithmetic number, because the mean of its divisors is an integer number (1345950630).

Almost surely, 2^2691901259 is an apocalyptic number.

2691901259 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691901259 is an equidigital number, since it uses as much as digits as its factorization.

2691901259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 2691901259 is about 51883.5355291060. The cubic root of 2691901259 is about 1391.0829955011.

The spelling of 2691901259 in words is "two billion, six hundred ninety-one million, nine hundred one thousand, two hundred fifty-nine".