266830163 has 4 divisors (see below), whose sum is σ = 270207840. Its totient is φ = 263452488.

The previous prime is 266830159. The next prime is 266830171. The reversal of 266830163 is 361038662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361038662 = 2 ⋅180519331.

It is a cyclic number.

It is not a de Polignac number, because 266830163 - 2² = 266830159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266830103) 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, 1688720 + ... + 1688877.

It is an arithmetic number, because the mean of its divisors is an integer number (67551960).

Almost surely, 2^266830163 is an apocalyptic number.

266830163 is a deficient number, since it is larger than the sum of its proper divisors (3377677).

266830163 is an equidigital number, since it uses as much as digits as its factorization.

266830163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377676.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 266830163 is about 16334.9368838695. The cubic root of 266830163 is about 643.7911078409.

The spelling of 266830163 in words is "two hundred sixty-six million, eight hundred thirty thousand, one hundred sixty-three".