2691027788 has 12 divisors (see below), whose sum is σ = 4861211712. Its totient is φ = 1302110160.

The previous prime is 2691027751. The next prime is 2691027793. The reversal of 2691027788 is 8877201962.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10850795 + ... + 10851042.

It is an arithmetic number, because the mean of its divisors is an integer number (405100976).

Almost surely, 2^2691027788 is an apocalyptic number.

It is an amenable number.

2691027788 is a deficient number, since it is larger than the sum of its proper divisors (2170183924).

2691027788 is a wasteful number, since it uses less digits than its factorization.

2691027788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21701872 (or 21701870 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 2691027788 is about 51875.1172336025. The cubic root of 2691027788 is about 1390.9325191916.

The spelling of 2691027788 in words is "two billion, six hundred ninety-one million, twenty-seven thousand, seven hundred eighty-eight".