422187019 has 2 divisors, whose sum is σ = 422187020. Its totient is φ = 422187018.

The previous prime is 422187001. The next prime is 422187023. The reversal of 422187019 is 910781224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422187019 - 2²⁷ = 287969291 is a prime.

It is a super-2 number, since 2×422187019² = 356483758024212722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (422187079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211093509 + 211093510.

It is an arithmetic number, because the mean of its divisors is an integer number (211093510).

Almost surely, 2^422187019 is an apocalyptic number.

422187019 is a deficient number, since it is larger than the sum of its proper divisors (1).

422187019 is an equidigital number, since it uses as much as digits as its factorization.

422187019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 422187019 is about 20547.1900511968. The cubic root of 422187019 is about 750.1848545828.

The spelling of 422187019 in words is "four hundred twenty-two million, one hundred eighty-seven thousand, nineteen".