2681692393 has 4 divisors (see below), whose sum is σ = 2681881488. Its totient is φ = 2681503300.

The previous prime is 2681692381. The next prime is 2681692399. The reversal of 2681692393 is 3932961862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2681692393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2681692399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71383 + ... + 102268.

It is an arithmetic number, because the mean of its divisors is an integer number (670470372).

Almost surely, 2^2681692393 is an apocalyptic number.

It is an amenable number.

2681692393 is a deficient number, since it is larger than the sum of its proper divisors (189095).

2681692393 is a wasteful number, since it uses less digits than its factorization.

2681692393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189094.

The product of its digits is 839808, while the sum is 49.

The square root of 2681692393 is about 51785.0595538906. The cubic root of 2681692393 is about 1389.3222362135.

The spelling of 2681692393 in words is "two billion, six hundred eighty-one million, six hundred ninety-two thousand, three hundred ninety-three".