18223763 has 2 divisors, whose sum is σ = 18223764. Its totient is φ = 18223762.

The previous prime is 18223759. The next prime is 18223769. The reversal of 18223763 is 36732281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18223763 - 2² = 18223759 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18223769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9111881 + 9111882.

It is an arithmetic number, because the mean of its divisors is an integer number (9111882).

Almost surely, 2^18223763 is an apocalyptic number.

18223763 is a deficient number, since it is larger than the sum of its proper divisors (1).

18223763 is an equidigital number, since it uses as much as digits as its factorization.

18223763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 18223763 is about 4268.9299596035. The cubic root of 18223763 is about 263.1556423786.

The spelling of 18223763 in words is "eighteen million, two hundred twenty-three thousand, seven hundred sixty-three".