18029081 has 16 divisors (see below), whose sum is σ = 21811200. Its totient is φ = 14557968.

The previous prime is 18029071. The next prime is 18029087. The reversal of 18029081 is 18092081.

It is a cyclic number.

It is not a de Polignac number, because 18029081 - 2¹⁰ = 18028057 is a prime.

It is a super-2 number, since 2×18029081² = 650095523409122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18029087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37400 + ... + 37878.

It is an arithmetic number, because the mean of its divisors is an integer number (1363200).

Almost surely, 2^18029081 is an apocalyptic number.

It is an amenable number.

18029081 is a deficient number, since it is larger than the sum of its proper divisors (3782119).

18029081 is a wasteful number, since it uses less digits than its factorization.

18029081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 18029081 is about 4246.0665326865. The cubic root of 18029081 is about 262.2152001123.

The spelling of 18029081 in words is "eighteen million, twenty-nine thousand, eighty-one".