18023954 has 16 divisors (see below), whose sum is σ = 29211840. Its totient is φ = 8291280.

The previous prime is 18023953. The next prime is 18023959. The reversal of 18023954 is 45932081.

It is a self number, because there is not a number n which added to its sum of digits gives 18023954.

It is not an unprimeable number, because it can be changed into a prime (18023953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8369 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (1825740).

Almost surely, 2^18023954 is an apocalyptic number.

18023954 is a deficient number, since it is larger than the sum of its proper divisors (11187886).

18023954 is a wasteful number, since it uses less digits than its factorization.

18023954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 18023954 is about 4245.4627545181. The cubic root of 18023954 is about 262.1903420365.

The spelling of 18023954 in words is "eighteen million, twenty-three thousand, nine hundred fifty-four".