2145767266 has 4 divisors (see below), whose sum is σ = 3218650902. Its totient is φ = 1072883632.

The previous prime is 2145767257. The next prime is 2145767279. The reversal of 2145767266 is 6627675412.

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

It can be written as a sum of positive squares in only one way, i.e., 1210692025 + 935075241 = 34795^2 + 30579^2 .

It is a super-2 number, since 2×2145767266² = 9208634319674229512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536441815 + ... + 536441818.

Almost surely, 2^2145767266 is an apocalyptic number.

2145767266 is a deficient number, since it is larger than the sum of its proper divisors (1072883636).

2145767266 is a wasteful number, since it uses less digits than its factorization.

2145767266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072883635.

The product of its digits is 846720, while the sum is 46.

The square root of 2145767266 is about 46322.4272464214. The cubic root of 2145767266 is about 1289.8153424364.

The spelling of 2145767266 in words is "two billion, one hundred forty-five million, seven hundred sixty-seven thousand, two hundred sixty-six".