18092881 has 16 divisors (see below), whose sum is σ = 19584000. Its totient is φ = 16674768.

The previous prime is 18092869. The next prime is 18092887. The reversal of 18092881 is 18829081.

It is a cyclic number.

It is not a de Polignac number, because 18092881 - 2¹¹ = 18090833 is a prime.

It is a super-2 number, since 2×18092881² = 654704685760322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18092881.

It is not an unprimeable number, because it can be changed into a prime (18092887) 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, 90820 + ... + 91018.

It is an arithmetic number, because the mean of its divisors is an integer number (1224000).

Almost surely, 2^18092881 is an apocalyptic number.

It is an amenable number.

18092881 is a deficient number, since it is larger than the sum of its proper divisors (1491119).

18092881 is a wasteful number, since it uses less digits than its factorization.

18092881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 18092881 is about 4253.5727335970. The cubic root of 18092881 is about 262.5241386721.

The spelling of 18092881 in words is "eighteen million, ninety-two thousand, eight hundred eighty-one".