20081186 has 16 divisors (see below), whose sum is σ = 30741984. Its totient is φ = 9836064.

The previous prime is 20081161. The next prime is 20081197. The reversal of 20081186 is 68118002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22301 + ... + 23183.

It is an arithmetic number, because the mean of its divisors is an integer number (1921374).

Almost surely, 2^20081186 is an apocalyptic number.

20081186 is a deficient number, since it is larger than the sum of its proper divisors (10660798).

20081186 is a wasteful number, since it uses less digits than its factorization.

20081186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 20081186 is about 4481.2036329540. The cubic root of 20081186 is about 271.8085536477.

Adding to 20081186 its reverse (68118002), we get a palindrome (88199188).

The spelling of 20081186 in words is "twenty million, eighty-one thousand, one hundred eighty-six".