1942399219 has 2 divisors, whose sum is σ = 1942399220. Its totient is φ = 1942399218.

The previous prime is 1942399213. The next prime is 1942399223. The reversal of 1942399219 is 9129932491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1942399219 - 2⁵ = 1942399187 is a prime.

It is a super-2 number, since 2×1942399219² = 7545829451943619922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1942399213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971199609 + 971199610.

It is an arithmetic number, because the mean of its divisors is an integer number (971199610).

Almost surely, 2^1942399219 is an apocalyptic number.

1942399219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942399219 is an equidigital number, since it uses as much as digits as its factorization.

1942399219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 1942399219 is about 44072.6584063181. The cubic root of 1942399219 is about 1247.7076319957.

The spelling of 1942399219 in words is "one billion, nine hundred forty-two million, three hundred ninety-nine thousand, two hundred nineteen".