18081652 has 12 divisors (see below), whose sum is σ = 32316480. Its totient is φ = 8848376.

The previous prime is 18081643. The next prime is 18081653. The reversal of 18081652 is 25618081.

It is a super-2 number, since 2×18081652² = 653892278098208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18081653) 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, 47902 + ... + 48277.

It is an arithmetic number, because the mean of its divisors is an integer number (2693040).

Almost surely, 2^18081652 is an apocalyptic number.

It is an amenable number.

18081652 is a deficient number, since it is larger than the sum of its proper divisors (14234828).

18081652 is a wasteful number, since it uses less digits than its factorization.

18081652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96230 (or 96228 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 18081652 is about 4252.2525795159. The cubic root of 18081652 is about 262.4698172402.

The spelling of 18081652 in words is "eighteen million, eighty-one thousand, six hundred fifty-two".