2642637443 has 4 divisors (see below), whose sum is σ = 2642740848. Its totient is φ = 2642534040.

The previous prime is 2642637407. The next prime is 2642637461. The reversal of 2642637443 is 3447362462.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3447362462 = 2 ⋅1723681231.

It is a cyclic number.

It is not a de Polignac number, because 2642637443 - 2⁶ = 2642637379 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 2642637443.

It is not an unprimeable number, because it can be changed into a prime (2642637043) 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, 17573 + ... + 74793.

It is an arithmetic number, because the mean of its divisors is an integer number (660685212).

Almost surely, 2^2642637443 is an apocalyptic number.

2642637443 is a deficient number, since it is larger than the sum of its proper divisors (103405).

2642637443 is an equidigital number, since it uses as much as digits as its factorization.

2642637443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103404.

The product of its digits is 580608, while the sum is 41.

The square root of 2642637443 is about 51406.5894900644. The cubic root of 2642637443 is about 1382.5447414907.

The spelling of 2642637443 in words is "two billion, six hundred forty-two million, six hundred thirty-seven thousand, four hundred forty-three".