190018 has 4 divisors (see below), whose sum is σ = 285030. Its totient is φ = 95008.

The previous prime is 189997. The next prime is 190027. The reversal of 190018 is 810091.

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., 173889 + 16129 = 417^2 + 127^2 .

It is a super-2 number, since 2×190018² = 72213680648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189977 and 190004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47503 + ... + 47506.

2¹⁹⁰⁰¹⁸ is an apocalyptic number.

190018 is a deficient number, since it is larger than the sum of its proper divisors (95012).

190018 is an equidigital number, since it uses as much as digits as its factorization.

190018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95011.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 190018 is about 435.9105412811. The cubic root of 190018 is about 57.4907861733.

The spelling of 190018 in words is "one hundred ninety thousand, eighteen".