18387323 has 2 divisors, whose sum is σ = 18387324. Its totient is φ = 18387322.

The previous prime is 18387301. The next prime is 18387331. The reversal of 18387323 is 32378381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18387323 - 2¹² = 18383227 is a prime.

It is not a weakly prime, because it can be changed into another prime (18387023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9193661 + 9193662.

It is an arithmetic number, because the mean of its divisors is an integer number (9193662).

Almost surely, 2^18387323 is an apocalyptic number.

18387323 is a deficient number, since it is larger than the sum of its proper divisors (1).

18387323 is an equidigital number, since it uses as much as digits as its factorization.

18387323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 18387323 is about 4288.0441928693. The cubic root of 18387323 is about 263.9405810183.

The spelling of 18387323 in words is "eighteen million, three hundred eighty-seven thousand, three hundred twenty-three".