108190081 has 2 divisors, whose sum is σ = 108190082. Its totient is φ = 108190080.

The previous prime is 108190063. The next prime is 108190127. The reversal of 108190081 is 180091801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100400400 + 7789681 = 10020^2 + 2791^2 .

It is an emirp because it is prime and its reverse (180091801) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 180061801 and 108160081.

It is a cyclic number.

It is not a de Polignac number, because 108190081 - 2²³ = 99801473 is a prime.

It is a super-2 number, since 2×108190081² = 23410187253573122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (108190001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54095040 + 54095041.

It is an arithmetic number, because the mean of its divisors is an integer number (54095041).

Almost surely, 2^108190081 is an apocalyptic number.

It is an amenable number.

108190081 is a deficient number, since it is larger than the sum of its proper divisors (1).

108190081 is an equidigital number, since it uses as much as digits as its factorization.

108190081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 108190081 is about 10401.4461013842. The cubic root of 108190081 is about 476.4995358993.

The spelling of 108190081 in words is "one hundred eight million, one hundred ninety thousand, eighty-one".