190955217 has 8 divisors (see below), whose sum is σ = 260528224. Its totient is φ = 124342848.

The previous prime is 190955207. The next prime is 190955221. The reversal of 190955217 is 712559091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 190955217 - 2⁴ = 190955201 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (190955207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740008 + ... + 740265.

It is an arithmetic number, because the mean of its divisors is an integer number (32566028).

Almost surely, 2^190955217 is an apocalyptic number.

It is an amenable number.

190955217 is a deficient number, since it is larger than the sum of its proper divisors (69573007).

190955217 is a wasteful number, since it uses less digits than its factorization.

190955217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480319.

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 190955217 is about 13818.6546740267. The cubic root of 190955217 is about 575.8515091524.

The spelling of 190955217 in words is "one hundred ninety million, nine hundred fifty-five thousand, two hundred seventeen".