2779842642 has 8 divisors (see below), whose sum is σ = 5559685296. Its totient is φ = 926614212.

The previous prime is 2779842581. The next prime is 2779842649. The reversal of 2779842642 is 2462489772.

It is a sphenic number, since it is the product of 3 distinct primes.

2779842642 is an admirable number.

It is a super-2 number, since 2×2779842642² = 15455050228563080328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2779842649) 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, 231653548 + ... + 231653559.

It is an arithmetic number, because the mean of its divisors is an integer number (694960662).

Almost surely, 2^2779842642 is an apocalyptic number.

2779842642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2779842642 is a wasteful number, since it uses less digits than its factorization.

2779842642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463307112.

The product of its digits is 2709504, while the sum is 51.

The square root of 2779842642 is about 52724.2130524487. The cubic root of 2779842642 is about 1406.0693373520.

The spelling of 2779842642 in words is "two billion, seven hundred seventy-nine million, eight hundred forty-two thousand, six hundred forty-two".