2681647901 has 16 divisors (see below), whose sum is σ = 2935907328. Its totient is φ = 2441577600.

The previous prime is 2681647879. The next prime is 2681647939. The reversal of 2681647901 is 1097461862.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2681647901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681647601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12665 + ... + 74321.

It is an arithmetic number, because the mean of its divisors is an integer number (183494208).

Almost surely, 2^2681647901 is an apocalyptic number.

It is an amenable number.

2681647901 is a deficient number, since it is larger than the sum of its proper divisors (254259427).

2681647901 is a wasteful number, since it uses less digits than its factorization.

2681647901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61772.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2681647901 is about 51784.6299687465. The cubic root of 2681647901 is about 1389.3145527488.

The spelling of 2681647901 in words is "two billion, six hundred eighty-one million, six hundred forty-seven thousand, nine hundred one".