1922719 has 2 divisors, whose sum is σ = 1922720. Its totient is φ = 1922718.

The previous prime is 1922693. The next prime is 1922749. The reversal of 1922719 is 9172291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1922719 - 2¹¹ = 1920671 is a prime.

It is a super-2 number, since 2×1922719² = 7393696705922, which contains 22 as substring.

It is a Chen prime.

1922719 is a lucky number.

It is equal to p₁₄₃₅₉₉ and since 1922719 and 143599 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1922749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961359 + 961360.

It is an arithmetic number, because the mean of its divisors is an integer number (961360).

2^1922719 is an apocalyptic number.

1922719 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922719 is an equidigital number, since it uses as much as digits as its factorization.

1922719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 31.

The square root of 1922719 is about 1386.6214335571. The cubic root of 1922719 is about 124.3479431561.

The spelling of 1922719 in words is "one million, nine hundred twenty-two thousand, seven hundred nineteen".