2681513589 has 4 divisors (see below), whose sum is σ = 3575351456. Its totient is φ = 1787675724.

The previous prime is 2681513563. The next prime is 2681513591. The reversal of 2681513589 is 9853151862.

It is a happy number.

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 not a de Polignac number, because 2681513589 - 2⁵ = 2681513557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681513509) 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, 446918929 + ... + 446918934.

It is an arithmetic number, because the mean of its divisors is an integer number (893837864).

Almost surely, 2^2681513589 is an apocalyptic number.

It is an amenable number.

2681513589 is a deficient number, since it is larger than the sum of its proper divisors (893837867).

2681513589 is an equidigital number, since it uses as much as digits as its factorization.

2681513589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893837866.

The product of its digits is 518400, while the sum is 48.

The square root of 2681513589 is about 51783.3331198369. Note that the first 3 decimals coincide. The cubic root of 2681513589 is about 1389.2913574676.

It can be divided in two parts, 26815 and 13589, that added together give a palindrome (40404).

The spelling of 2681513589 in words is "two billion, six hundred eighty-one million, five hundred thirteen thousand, five hundred eighty-nine".