123818663 has 2 divisors, whose sum is σ = 123818664. Its totient is φ = 123818662.

The previous prime is 123818623. The next prime is 123818677. The reversal of 123818663 is 366818321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123818663 is a prime.

It is a super-2 number, since 2×123818663² = 30662122614215138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123818623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61909331 + 61909332.

It is an arithmetic number, because the mean of its divisors is an integer number (61909332).

Almost surely, 2^123818663 is an apocalyptic number.

123818663 is a deficient number, since it is larger than the sum of its proper divisors (1).

123818663 is an equidigital number, since it uses as much as digits as its factorization.

123818663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 123818663 is about 11127.3834750133. The cubic root of 123818663 is about 498.4198958016.

The spelling of 123818663 in words is "one hundred twenty-three million, eight hundred eighteen thousand, six hundred sixty-three".