2690358891 has 12 divisors (see below), whose sum is σ = 3942895656. Its totient is φ = 1630520320.

The previous prime is 2690358889. The next prime is 2690358943. The reversal of 2690358891 is 1988530962.

It is a happy number.

It is not a de Polignac number, because 2690358891 - 2¹ = 2690358889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2690358871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3705366 + ... + 3706091.

It is an arithmetic number, because the mean of its divisors is an integer number (328574638).

Almost surely, 2^2690358891 is an apocalyptic number.

2690358891 is a deficient number, since it is larger than the sum of its proper divisors (1252536765).

2690358891 is a wasteful number, since it uses less digits than its factorization.

2690358891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7411482 (or 7411471 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 2690358891 is about 51868.6696474857. The cubic root of 2690358891 is about 1390.8172636386.

The spelling of 2690358891 in words is "two billion, six hundred ninety million, three hundred fifty-eight thousand, eight hundred ninety-one".