2678462609 has 2 divisors, whose sum is σ = 2678462610. Its totient is φ = 2678462608.

The previous prime is 2678462599. The next prime is 2678462641. The reversal of 2678462609 is 9062648762.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2029232209 + 649230400 = 45047^2 + 25480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2678462609 - 2⁴ = 2678462593 is a prime.

It is a super-2 number, since 2×2678462609² = 14348323895622173762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2678462669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339231304 + 1339231305.

It is an arithmetic number, because the mean of its divisors is an integer number (1339231305).

Almost surely, 2^2678462609 is an apocalyptic number.

It is an amenable number.

2678462609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2678462609 is an equidigital number, since it uses as much as digits as its factorization.

2678462609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 2678462609 is about 51753.8656430609. The cubic root of 2678462609 is about 1388.7642535770.

The spelling of 2678462609 in words is "two billion, six hundred seventy-eight million, four hundred sixty-two thousand, six hundred nine".