2682431639 has 4 divisors (see below), whose sum is σ = 2685390024. Its totient is φ = 2679473256.

The previous prime is 2682431627. The next prime is 2682431651. The reversal of 2682431639 is 9361342862.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2682431627) and next prime (2682431651).

It is a cyclic number.

It is not a de Polignac number, because 2682431639 - 2²⁸ = 2413996183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2682431639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2682431669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477832 + ... + 1479645.

It is an arithmetic number, because the mean of its divisors is an integer number (671347506).

Almost surely, 2^2682431639 is an apocalyptic number.

2682431639 is a deficient number, since it is larger than the sum of its proper divisors (2958385).

2682431639 is an equidigital number, since it uses as much as digits as its factorization.

2682431639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2958384.

The product of its digits is 373248, while the sum is 44.

The square root of 2682431639 is about 51792.1966998891. The cubic root of 2682431639 is about 1389.4498865174.

The spelling of 2682431639 in words is "two billion, six hundred eighty-two million, four hundred thirty-one thousand, six hundred thirty-nine".