2159536667 has 4 divisors (see below), whose sum is σ = 2179349040. Its totient is φ = 2139724296.

The previous prime is 2159536661. The next prime is 2159536693. The reversal of 2159536667 is 7666359512.

It is a happy number.

2159536667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2159536667 - 2¹⁰ = 2159535643 is a prime.

It is a super-2 number, since 2×2159536667² = 9327197232234937778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159536661) 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, 9906023 + ... + 9906240.

It is an arithmetic number, because the mean of its divisors is an integer number (544837260).

Almost surely, 2^2159536667 is an apocalyptic number.

2159536667 is a deficient number, since it is larger than the sum of its proper divisors (19812373).

2159536667 is a wasteful number, since it uses less digits than its factorization.

2159536667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19812372.

The product of its digits is 2041200, while the sum is 50.

The square root of 2159536667 is about 46470.8152177256. The cubic root of 2159536667 is about 1292.5683795681.

The spelling of 2159536667 in words is "two billion, one hundred fifty-nine million, five hundred thirty-six thousand, six hundred sixty-seven".