2691942386 has 16 divisors (see below), whose sum is σ = 4625475840. Its totient is φ = 1151010240.

The previous prime is 2691942377. The next prime is 2691942391. The reversal of 2691942386 is 6832491962.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 217031 + ... + 229098.

It is an arithmetic number, because the mean of its divisors is an integer number (289092240).

Almost surely, 2^2691942386 is an apocalyptic number.

2691942386 is a deficient number, since it is larger than the sum of its proper divisors (1933533454).

2691942386 is a wasteful number, since it uses less digits than its factorization.

2691942386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446569.

The product of its digits is 1119744, while the sum is 50.

The square root of 2691942386 is about 51883.9318671976. The cubic root of 2691942386 is about 1391.0900798099.

The spelling of 2691942386 in words is "two billion, six hundred ninety-one million, nine hundred forty-two thousand, three hundred eighty-six".