2690471591 has 2 divisors, whose sum is σ = 2690471592. Its totient is φ = 2690471590.

The previous prime is 2690471587. The next prime is 2690471593. The reversal of 2690471591 is 1951740962.

2690471591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2690471591 - 2² = 2690471587 is a prime.

Together with 2690471593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2690471593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345235795 + 1345235796.

It is an arithmetic number, because the mean of its divisors is an integer number (1345235796).

Almost surely, 2^2690471591 is an apocalyptic number.

2690471591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690471591 is an equidigital number, since it uses as much as digits as its factorization.

2690471591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 2690471591 is about 51869.7560337428. The cubic root of 2690471591 is about 1390.8366839617.

The spelling of 2690471591 in words is "two billion, six hundred ninety million, four hundred seventy-one thousand, five hundred ninety-one".