2126960866 has 4 divisors (see below), whose sum is σ = 3190441302. Its totient is φ = 1063480432.

The previous prime is 2126960863. The next prime is 2126960867. The reversal of 2126960866 is 6680696212.

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., 1740641841 + 386319025 = 41721^2 + 19655^2 .

It is not an unprimeable number, because it can be changed into a prime (2126960863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531740215 + ... + 531740218.

Almost surely, 2^2126960866 is an apocalyptic number.

2126960866 is a deficient number, since it is larger than the sum of its proper divisors (1063480436).

2126960866 is a wasteful number, since it uses less digits than its factorization.

2126960866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063480435.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 2126960866 is about 46118.9859602312. The cubic root of 2126960866 is about 1286.0361199258.

The spelling of 2126960866 in words is "two billion, one hundred twenty-six million, nine hundred sixty thousand, eight hundred sixty-six".