80900194 has 4 divisors (see below), whose sum is σ = 121350294. Its totient is φ = 40450096.

The previous prime is 80900179. The next prime is 80900201. The reversal of 80900194 is 49100908.

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

It can be written as a sum of positive squares in only one way, i.e., 79869969 + 1030225 = 8937^2 + 1015^2 .

It is a Smith number, since the sum of its digits (31) 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20225047 + ... + 20225050.

Almost surely, 2^80900194 is an apocalyptic number.

80900194 is a deficient number, since it is larger than the sum of its proper divisors (40450100).

80900194 is a wasteful number, since it uses less digits than its factorization.

80900194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40450099.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 80900194 is about 8994.4535131380. The cubic root of 80900194 is about 432.4970879775.

The spelling of 80900194 in words is "eighty million, nine hundred thousand, one hundred ninety-four".