2681693157 has 64 divisors (see below), whose sum is σ = 4321013760. Its totient is φ = 1457913600.

The previous prime is 2681693153. The next prime is 2681693167. The reversal of 2681693157 is 7513961862.

It is not a de Polignac number, because 2681693157 - 2² = 2681693153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681693153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2270107 + ... + 2271287.

It is an arithmetic number, because the mean of its divisors is an integer number (67515840).

Almost surely, 2^2681693157 is an apocalyptic number.

It is an amenable number.

2681693157 is a deficient number, since it is larger than the sum of its proper divisors (1639320603).

2681693157 is a wasteful number, since it uses less digits than its factorization.

2681693157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354.

The product of its digits is 544320, while the sum is 48.

The square root of 2681693157 is about 51785.0669305351. The cubic root of 2681693157 is about 1389.3223681504.

The spelling of 2681693157 in words is "two billion, six hundred eighty-one million, six hundred ninety-three thousand, one hundred fifty-seven".