2162565266 has 8 divisors (see below), whose sum is σ = 3244203084. Its totient is φ = 1081164240.

The previous prime is 2162565263. The next prime is 2162565287. The reversal of 2162565266 is 6625652612.

It can be written as a sum of positive squares in 2 ways, for example, as 2103598225 + 58967041 = 45865^2 + 7679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2162565263) 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, 34265 + ... + 74156.

Almost surely, 2^2162565266 is an apocalyptic number.

2162565266 is a deficient number, since it is larger than the sum of its proper divisors (1081637818).

2162565266 is a wasteful number, since it uses less digits than its factorization.

2162565266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118396.

The product of its digits is 259200, while the sum is 41.

The square root of 2162565266 is about 46503.3898334304. The cubic root of 2162565266 is about 1293.1723428732.

The spelling of 2162565266 in words is "two billion, one hundred sixty-two million, five hundred sixty-five thousand, two hundred sixty-six".