18180348 has 12 divisors (see below), whose sum is σ = 42420840. Its totient is φ = 6060112.

The previous prime is 18180347. The next prime is 18180377. The reversal of 18180348 is 84308181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×18180348² = 661050106802208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18180347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757503 + ... + 757526.

It is an arithmetic number, because the mean of its divisors is an integer number (3535070).

Almost surely, 2^18180348 is an apocalyptic number.

It is an amenable number.

18180348 is an abundant number, since it is smaller than the sum of its proper divisors (24240492).

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

18180348 is a wasteful number, since it uses less digits than its factorization.

18180348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515036 (or 1515034 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18180348 is about 4263.8419295279. The cubic root of 18180348 is about 262.9465017661.

It can be divided in two parts, 18180 and 348, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 18180348 in words is "eighteen million, one hundred eighty thousand, three hundred forty-eight".