2644320542 has 8 divisors (see below), whose sum is σ = 3991745496. Its totient is φ = 1313738712.

The previous prime is 2644320541. The next prime is 2644320577. The reversal of 2644320542 is 2450234462.

It is a happy number.

2644320542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×2644320542² = 13984862257686347528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2644320499 and 2644320508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644320541) 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, 4210388 + ... + 4211015.

It is an arithmetic number, because the mean of its divisors is an integer number (498968187).

Almost surely, 2^2644320542 is an apocalyptic number.

2644320542 is a deficient number, since it is larger than the sum of its proper divisors (1347424954).

2644320542 is a wasteful number, since it uses less digits than its factorization.

2644320542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8421562.

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 2644320542 is about 51422.9573439724. The cubic root of 2644320542 is about 1382.8381940083.

The spelling of 2644320542 in words is "two billion, six hundred forty-four million, three hundred twenty thousand, five hundred forty-two".