2642842769 has 4 divisors (see below), whose sum is σ = 3020391744. Its totient is φ = 2265293796.

The previous prime is 2642842711. The next prime is 2642842789. The reversal of 2642842769 is 9672482462.

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 a cyclic number.

It is not a de Polignac number, because 2642842769 - 2²⁰ = 2641794193 is a prime.

It is a super-2 number, since 2×2642842769² = 13969235803311174722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2642842789) 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, 188774477 + ... + 188774490.

It is an arithmetic number, because the mean of its divisors is an integer number (755097936).

Almost surely, 2^2642842769 is an apocalyptic number.

It is an amenable number.

2642842769 is a deficient number, since it is larger than the sum of its proper divisors (377548975).

2642842769 is an equidigital number, since it uses as much as digits as its factorization.

2642842769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377548974.

The product of its digits is 2322432, while the sum is 50.

The square root of 2642842769 is about 51408.5865298784. The cubic root of 2642842769 is about 1382.5805472638.

The spelling of 2642842769 in words is "two billion, six hundred forty-two million, eight hundred forty-two thousand, seven hundred sixty-nine".