22645019 has 2 divisors, whose sum is σ = 22645020. Its totient is φ = 22645018.

The previous prime is 22645009. The next prime is 22645039. The reversal of 22645019 is 91054622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22645019 - 2²⁴ = 5867803 is a prime.

It is a super-2 number, since 2×22645019² = 1025593771020722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22644982 and 22645000.

It is not a weakly prime, because it can be changed into another prime (22645009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322509 + 11322510.

It is an arithmetic number, because the mean of its divisors is an integer number (11322510).

Almost surely, 2^22645019 is an apocalyptic number.

22645019 is a deficient number, since it is larger than the sum of its proper divisors (1).

22645019 is an equidigital number, since it uses as much as digits as its factorization.

22645019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22645019 is about 4758.6782828849. The cubic root of 22645019 is about 282.9160351403.

The spelling of 22645019 in words is "twenty-two million, six hundred forty-five thousand, nineteen".