266195238 has 16 divisors (see below), whose sum is σ = 555538176. Its totient is φ = 84873800.

The previous prime is 266195207. The next prime is 266195239. The reversal of 266195238 is 832591662.

It is a self number, because there is not a number n which added to its sum of digits gives 266195238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266195239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964338 + ... + 964613.

It is an arithmetic number, because the mean of its divisors is an integer number (34721136).

Almost surely, 2^266195238 is an apocalyptic number.

266195238 is an abundant number, since it is smaller than the sum of its proper divisors (289342938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266195238 is a wasteful number, since it uses less digits than its factorization.

266195238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928979.

The product of its digits is 155520, while the sum is 42.

The square root of 266195238 is about 16315.4907373330. The cubic root of 266195238 is about 643.2800665238.

The spelling of 266195238 in words is "two hundred sixty-six million, one hundred ninety-five thousand, two hundred thirty-eight".