2699387091 has 12 divisors (see below), whose sum is σ = 3923037768. Its totient is φ = 1788549984.

The previous prime is 2699387087. The next prime is 2699387099. The reversal of 2699387091 is 1907839962.

It is not a de Polignac number, because 2699387091 - 2² = 2699387087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2699387099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 918570 + ... + 921503.

It is an arithmetic number, because the mean of its divisors is an integer number (326919814).

Almost surely, 2^2699387091 is an apocalyptic number.

2699387091 is a deficient number, since it is larger than the sum of its proper divisors (1223650677).

2699387091 is a wasteful number, since it uses less digits than its factorization.

2699387091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840242 (or 1840239 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 2699387091 is about 51955.6261727255. The cubic root of 2699387091 is about 1392.3712764963.

The spelling of 2699387091 in words is "two billion, six hundred ninety-nine million, three hundred eighty-seven thousand, ninety-one".