2140813866 has 32 divisors (see below), whose sum is σ = 4532198400. Its totient is φ = 672263280.

The previous prime is 2140813861. The next prime is 2140813943. The reversal of 2140813866 is 6683180412.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2140813861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32050 + ... + 72861.

It is an arithmetic number, because the mean of its divisors is an integer number (141631200).

Almost surely, 2^2140813866 is an apocalyptic number.

2140813866 is an abundant number, since it is smaller than the sum of its proper divisors (2391384534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2140813866 is a wasteful number, since it uses less digits than its factorization.

2140813866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105114.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 2140813866 is about 46268.9298125643. The cubic root of 2140813866 is about 1288.8220856275.

The spelling of 2140813866 in words is "two billion, one hundred forty million, eight hundred thirteen thousand, eight hundred sixty-six".