22418493887 has 2 divisors, whose sum is σ = 22418493888. Its totient is φ = 22418493886.

The previous prime is 22418493869. The next prime is 22418493893. The reversal of 22418493887 is 78839481422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22418493887 - 2¹² = 22418489791 is a prime.

It is a super-2 number, since 2×22418493887² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22418423887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11209246943 + 11209246944.

It is an arithmetic number, because the mean of its divisors is an integer number (11209246944).

Almost surely, 2^22418493887 is an apocalyptic number.

22418493887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22418493887 is an equidigital number, since it uses as much as digits as its factorization.

22418493887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 56.

The spelling of 22418493887 in words is "twenty-two billion, four hundred eighteen million, four hundred ninety-three thousand, eight hundred eighty-seven".