18068771 has 4 divisors (see below), whose sum is σ = 20650032. Its totient is φ = 15487512.

The previous prime is 18068767. The next prime is 18068803. The reversal of 18068771 is 17786081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17786081 = 59 ⋅301459.

It is a cyclic number.

It is not a de Polignac number, because 18068771 - 2² = 18068767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18068971) 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, 1290620 + ... + 1290633.

It is an arithmetic number, because the mean of its divisors is an integer number (5162508).

Almost surely, 2^18068771 is an apocalyptic number.

18068771 is a deficient number, since it is larger than the sum of its proper divisors (2581261).

18068771 is an equidigital number, since it uses as much as digits as its factorization.

18068771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581260.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 18068771 is about 4250.7377006821. The cubic root of 18068771 is about 262.4074763867.

The spelling of 18068771 in words is "eighteen million, sixty-eight thousand, seven hundred seventy-one".