2134563666 has 16 divisors (see below), whose sum is σ = 4291481088. Its totient is φ = 707795600.

The previous prime is 2134563661. The next prime is 2134563671. The reversal of 2134563666 is 6663654312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2134563661) and next prime (2134563671).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2134563661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930165 + ... + 932456.

It is an arithmetic number, because the mean of its divisors is an integer number (268217568).

Almost surely, 2^2134563666 is an apocalyptic number.

2134563666 is an abundant number, since it is smaller than the sum of its proper divisors (2156917422).

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

2134563666 is a wasteful number, since it uses less digits than its factorization.

2134563666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862817.

The product of its digits is 466560, while the sum is 42.

The square root of 2134563666 is about 46201.3383572381. The cubic root of 2134563666 is about 1287.5666054838.

The spelling of 2134563666 in words is "two billion, one hundred thirty-four million, five hundred sixty-three thousand, six hundred sixty-six".