190264905 has 12 divisors (see below), whose sum is σ = 329792580. Its totient is φ = 101474592.

The previous prime is 190264891. The next prime is 190264909. The reversal of 190264905 is 509462091.

190264905 is a `hidden beast` number, since 1 + 9 + 0 + 2 + 649 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 110502144 + 79762761 = 10512^2 + 8931^2 .

It is not a de Polignac number, because 190264905 - 2⁴ = 190264889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190264905.

It is not an unprimeable number, because it can be changed into a prime (190264909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2114010 + ... + 2114099.

It is an arithmetic number, because the mean of its divisors is an integer number (27482715).

Almost surely, 2^190264905 is an apocalyptic number.

190264905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190264905 is a deficient number, since it is larger than the sum of its proper divisors (139527675).

190264905 is a wasteful number, since it uses less digits than its factorization.

190264905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228120 (or 4228117 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 190264905 is about 13793.6545193796. The cubic root of 190264905 is about 575.1567612913.

The spelling of 190264905 in words is "one hundred ninety million, two hundred sixty-four thousand, nine hundred five".