266041983 has 4 divisors (see below), whose sum is σ = 354722648. Its totient is φ = 177361320.

The previous prime is 266041939. The next prime is 266041987. The reversal of 266041983 is 389140662.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 266041983 - 2¹⁰ = 266040959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266041987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44340328 + ... + 44340333.

It is an arithmetic number, because the mean of its divisors is an integer number (88680662).

Almost surely, 2^266041983 is an apocalyptic number.

266041983 is a deficient number, since it is larger than the sum of its proper divisors (88680665).

266041983 is an equidigital number, since it uses as much as digits as its factorization.

266041983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88680664.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 266041983 is about 16310.7934509637. The cubic root of 266041983 is about 643.1565922237.

The spelling of 266041983 in words is "two hundred sixty-six million, forty-one thousand, nine hundred eighty-three".