18674523 has 16 divisors (see below), whose sum is σ = 31618560. Its totient is φ = 10671048.

The previous prime is 18674501. The next prime is 18674527. The reversal of 18674523 is 32547681.

It is not a de Polignac number, because 18674523 - 2¹² = 18670427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18674527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49215 + ... + 49592.

It is an arithmetic number, because the mean of its divisors is an integer number (1976160).

Almost surely, 2^18674523 is an apocalyptic number.

18674523 is a deficient number, since it is larger than the sum of its proper divisors (12944037).

18674523 is an equidigital number, since it uses as much as digits as its factorization.

18674523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98823 (or 98817 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 18674523 is about 4321.4028972083. The cubic root of 18674523 is about 265.3076905445.

It can be divided in two parts, 18 and 674523, that added together give a triangular number (674541 = T₁₁₆₁).

The spelling of 18674523 in words is "eighteen million, six hundred seventy-four thousand, five hundred twenty-three".