18133452 has 18 divisors (see below), whose sum is σ = 45837428. Its totient is φ = 6044472.

The previous prime is 18133433. The next prime is 18133501. The reversal of 18133452 is 25433181.

It is a happy number.

18133452 is a `hidden beast` number, since 181 + 33 + 452 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251818 + ... + 251889.

Almost surely, 2^18133452 is an apocalyptic number.

18133452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18133452 is an abundant number, since it is smaller than the sum of its proper divisors (27703976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18133452 is a wasteful number, since it uses less digits than its factorization.

18133452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503717 (or 503712 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 18133452 is about 4258.3391128467. The cubic root of 18133452 is about 262.7202179230.

It can be divided in two parts, 181 and 33452, that added together give a palindrome (33633).

The spelling of 18133452 in words is "eighteen million, one hundred thirty-three thousand, four hundred fifty-two".