190038217 has 4 divisors (see below), whose sum is σ = 191003076. Its totient is φ = 189073360.

The previous prime is 190038203. The next prime is 190038227. The reversal of 190038217 is 712830091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712830091 = 25097 ⋅28403.

It can be written as a sum of positive squares in 2 ways, for example, as 81649296 + 108388921 = 9036^2 + 10411^2 .

It is a cyclic number.

It is not a de Polignac number, because 190038217 - 2²⁷ = 55820489 is a prime.

It is a super-2 number, since 2×190038217² = 72229047841078178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190038227) 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 in 3 ways as a sum of consecutive naturals, for example, 482134 + ... + 482527.

It is an arithmetic number, because the mean of its divisors is an integer number (47750769).

Almost surely, 2^190038217 is an apocalyptic number.

It is an amenable number.

190038217 is a deficient number, since it is larger than the sum of its proper divisors (964859).

190038217 is an equidigital number, since it uses as much as digits as its factorization.

190038217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964858.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 190038217 is about 13785.4349586801. The cubic root of 190038217 is about 574.9282501525.

The spelling of 190038217 in words is "one hundred ninety million, thirty-eight thousand, two hundred seventeen".