2672531643 has 4 divisors (see below), whose sum is σ = 3563375528. Its totient is φ = 1781687760.

The previous prime is 2672531611. The next prime is 2672531647. The reversal of 2672531643 is 3461352762.

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

It is not a de Polignac number, because 2672531643 - 2⁵ = 2672531611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2672531647) 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, 445421938 + ... + 445421943.

It is an arithmetic number, because the mean of its divisors is an integer number (890843882).

Almost surely, 2^2672531643 is an apocalyptic number.

2672531643 is a deficient number, since it is larger than the sum of its proper divisors (890843885).

2672531643 is an equidigital number, since it uses as much as digits as its factorization.

2672531643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890843884.

The product of its digits is 181440, while the sum is 39.

The square root of 2672531643 is about 51696.5341488189. The cubic root of 2672531643 is about 1387.7384411579.

The spelling of 2672531643 in words is "two billion, six hundred seventy-two million, five hundred thirty-one thousand, six hundred forty-three".