85190818 has 4 divisors (see below), whose sum is σ = 127786230. Its totient is φ = 42595408.

The previous prime is 85190797. The next prime is 85190839. The reversal of 85190818 is 81809158.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (85190797) and next prime (85190839).

It can be written as a sum of positive squares in only one way, i.e., 50651689 + 34539129 = 7117^2 + 5877^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21297703 + ... + 21297706.

Almost surely, 2^85190818 is an apocalyptic number.

85190818 is a deficient number, since it is larger than the sum of its proper divisors (42595412).

85190818 is a wasteful number, since it uses less digits than its factorization.

85190818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42595411.

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 85190818 is about 9229.8872149122. The cubic root of 85190818 is about 440.0117386675.

The spelling of 85190818 in words is "eighty-five million, one hundred ninety thousand, eight hundred eighteen".