2078722579 has 4 divisors (see below), whose sum is σ = 2082376440. Its totient is φ = 2075068720.

The previous prime is 2078722571. The next prime is 2078722601. The reversal of 2078722579 is 9752278702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9752278702 = 2 ⋅4876139351.

It is a cyclic number.

It is not a de Polignac number, because 2078722579 - 2³ = 2078722571 is a prime.

It is a super-2 number, since 2×2078722579² = 8642175120888822482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078722571) 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, 1826077 + ... + 1827214.

It is an arithmetic number, because the mean of its divisors is an integer number (520594110).

Almost surely, 2^2078722579 is an apocalyptic number.

2078722579 is a deficient number, since it is larger than the sum of its proper divisors (3653861).

2078722579 is an equidigital number, since it uses as much as digits as its factorization.

2078722579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653860.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 2078722579 is about 45593.0101989329. The cubic root of 2078722579 is about 1276.2394875071.

The spelling of 2078722579 in words is "two billion, seventy-eight million, seven hundred twenty-two thousand, five hundred seventy-nine".