2080978409 has 2 divisors, whose sum is σ = 2080978410. Its totient is φ = 2080978408.

The previous prime is 2080978399. The next prime is 2080978453. The reversal of 2080978409 is 9048790802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1087152784 + 993825625 = 32972^2 + 31525^2 .

It is a cyclic number.

It is not a de Polignac number, because 2080978409 - 2²⁰ = 2079929833 is a prime.

It is a super-2 number, since 2×2080978409² = 8660942277448342562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2080978489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040489204 + 1040489205.

It is an arithmetic number, because the mean of its divisors is an integer number (1040489205).

Almost surely, 2^2080978409 is an apocalyptic number.

It is an amenable number.

2080978409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2080978409 is an equidigital number, since it uses as much as digits as its factorization.

2080978409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 2080978409 is about 45617.7422610984. The cubic root of 2080978409 is about 1276.7009790271.

The spelling of 2080978409 in words is "two billion, eighty million, nine hundred seventy-eight thousand, four hundred nine".