190964786 has 4 divisors (see below), whose sum is σ = 286447182. Its totient is φ = 95482392.

The previous prime is 190964779. The next prime is 190964789. The reversal of 190964786 is 687469091.

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., 190964761 + 25 = 13819^2 + 5^2 .

It is not an unprimeable number, because it can be changed into a prime (190964789) 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 as a sum of consecutive naturals, namely, 47741195 + ... + 47741198.

Almost surely, 2^190964786 is an apocalyptic number.

190964786 is a deficient number, since it is larger than the sum of its proper divisors (95482396).

190964786 is an equidigital number, since it uses as much as digits as its factorization.

190964786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95482395.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 190964786 is about 13819.0009045517. Note that the first 3 decimals coincide. The cubic root of 190964786 is about 575.8611278668.

The spelling of 190964786 in words is "one hundred ninety million, nine hundred sixty-four thousand, seven hundred eighty-six".