18850523 has 2 divisors, whose sum is σ = 18850524. Its totient is φ = 18850522.

The previous prime is 18850499. The next prime is 18850541. The reversal of 18850523 is 32505881.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18850523 - 2⁸ = 18850267 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18850523.

It is not a weakly prime, because it can be changed into another prime (18850543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9425261 + 9425262.

It is an arithmetic number, because the mean of its divisors is an integer number (9425262).

Almost surely, 2^18850523 is an apocalyptic number.

18850523 is a deficient number, since it is larger than the sum of its proper divisors (1).

18850523 is an equidigital number, since it uses as much as digits as its factorization.

18850523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 18850523 is about 4341.7188992380. The cubic root of 18850523 is about 266.1385591649.

The spelling of 18850523 in words is "eighteen million, eight hundred fifty thousand, five hundred twenty-three".