190490666 has 4 divisors (see below), whose sum is σ = 285736002. Its totient is φ = 95245332.

The previous prime is 190490659. The next prime is 190490683. The reversal of 190490666 is 666094091.

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., 175006441 + 15484225 = 13229^2 + 3935^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 47622665 + ... + 47622668.

Almost surely, 2^190490666 is an apocalyptic number.

190490666 is a deficient number, since it is larger than the sum of its proper divisors (95245336).

190490666 is an equidigital number, since it uses as much as digits as its factorization.

190490666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95245335.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 190490666 is about 13801.8356025566. The cubic root of 190490666 is about 575.3841576537.

The spelling of 190490666 in words is "one hundred ninety million, four hundred ninety thousand, six hundred sixty-six".