4345678819 has 2 divisors, whose sum is σ = 4345678820. Its totient is φ = 4345678818.

The previous prime is 4345678789. The next prime is 4345678829. The reversal of 4345678819 is 9188765434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4345678819 - 2⁷ = 4345678691 is a prime.

It is a super-2 number, since 2×4345678819² = 37769848795810469522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4345678819.

It is not a weakly prime, because it can be changed into another prime (4345678829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2172839409 + 2172839410.

It is an arithmetic number, because the mean of its divisors is an integer number (2172839410).

Almost surely, 2^4345678819 is an apocalyptic number.

4345678819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4345678819 is an equidigital number, since it uses as much as digits as its factorization.

4345678819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The square root of 4345678819 is about 65921.7628632609. The cubic root of 4345678819 is about 1631.8711895874.

The spelling of 4345678819 in words is "four billion, three hundred forty-five million, six hundred seventy-eight thousand, eight hundred nineteen".