2691897694 has 16 divisors (see below), whose sum is σ = 4252482000. Its totient is φ = 1274474304.

The previous prime is 2691897683. The next prime is 2691897701. The reversal of 2691897694 is 4967981962.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64632 + ... + 97780.

It is an arithmetic number, because the mean of its divisors is an integer number (265780125).

Almost surely, 2^2691897694 is an apocalyptic number.

2691897694 is a deficient number, since it is larger than the sum of its proper divisors (1560584306).

2691897694 is a wasteful number, since it uses less digits than its factorization.

2691897694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35307.

The product of its digits is 11757312, while the sum is 61.

The square root of 2691897694 is about 51883.5011733017. The cubic root of 2691897694 is about 1391.0823814106.

The spelling of 2691897694 in words is "two billion, six hundred ninety-one million, eight hundred ninety-seven thousand, six hundred ninety-four".