190666495 has 4 divisors (see below), whose sum is σ = 228799800. Its totient is φ = 152533192.

The previous prime is 190666471. The next prime is 190666507. The reversal of 190666495 is 594666091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 594666091 = 41 ⋅14504051.

It is a cyclic number.

It is not a de Polignac number, because 190666495 - 2⁷ = 190666367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19066645 + ... + 19066654.

It is an arithmetic number, because the mean of its divisors is an integer number (57199950).

Almost surely, 2^190666495 is an apocalyptic number.

190666495 is a deficient number, since it is larger than the sum of its proper divisors (38133305).

190666495 is an equidigital number, since it uses as much as digits as its factorization.

190666495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38133304.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 190666495 is about 13808.2039020287. The cubic root of 190666495 is about 575.5611358957.

The spelling of 190666495 in words is "one hundred ninety million, six hundred sixty-six thousand, four hundred ninety-five".