19422379 has 2 divisors, whose sum is σ = 19422380. Its totient is φ = 19422378.

The previous prime is 19422371. The next prime is 19422443. The reversal of 19422379 is 97322491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19422379 - 2³ = 19422371 is a prime.

It is not a weakly prime, because it can be changed into another prime (19422371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9711189 + 9711190.

It is an arithmetic number, because the mean of its divisors is an integer number (9711190).

Almost surely, 2^19422379 is an apocalyptic number.

19422379 is a deficient number, since it is larger than the sum of its proper divisors (1).

19422379 is an equidigital number, since it uses as much as digits as its factorization.

19422379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 19422379 is about 4407.0828220037. The cubic root of 19422379 is about 268.8030186367.

The spelling of 19422379 in words is "nineteen million, four hundred twenty-two thousand, three hundred seventy-nine".