2682991643 has 4 divisors (see below), whose sum is σ = 2684309520. Its totient is φ = 2681673768.

The previous prime is 2682991639. The next prime is 2682991667. The reversal of 2682991643 is 3461992862.

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

It is a cyclic number.

It is not a de Polignac number, because 2682991643 - 2² = 2682991639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2682991591 and 2682991600.

It is not an unprimeable number, because it can be changed into a prime (2682991603) 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, 655880 + ... + 659957.

It is an arithmetic number, because the mean of its divisors is an integer number (671077380).

Almost surely, 2^2682991643 is an apocalyptic number.

2682991643 is a deficient number, since it is larger than the sum of its proper divisors (1317877).

2682991643 is a wasteful number, since it uses less digits than its factorization.

2682991643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317876.

The product of its digits is 1119744, while the sum is 50.

The square root of 2682991643 is about 51797.6026761857. The cubic root of 2682991643 is about 1389.5465703548.

The spelling of 2682991643 in words is "two billion, six hundred eighty-two million, nine hundred ninety-one thousand, six hundred forty-three".