18019352 has 16 divisors (see below), whose sum is σ = 36385440. Its totient is φ = 8316576.

The previous prime is 18019343. The next prime is 18019357. The reversal of 18019352 is 25391081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18019357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86528 + ... + 86735.

It is an arithmetic number, because the mean of its divisors is an integer number (2274090).

Almost surely, 2^18019352 is an apocalyptic number.

It is an amenable number.

18019352 is an abundant number, since it is smaller than the sum of its proper divisors (18366088).

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

18019352 is a wasteful number, since it uses less digits than its factorization.

18019352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173282 (or 173278 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 18019352 is about 4244.9207295308. The cubic root of 18019352 is about 262.1680253894.

The spelling of 18019352 in words is "eighteen million, nineteen thousand, three hundred fifty-two".