2187268863 has 8 divisors (see below), whose sum is σ = 3140693808. Its totient is φ = 1346011584.

The previous prime is 2187268817. The next prime is 2187268903. The reversal of 2187268863 is 3688627812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2187268863 - 2⁶ = 2187268799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187268463) 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, 28041870 + ... + 28041947.

It is an arithmetic number, because the mean of its divisors is an integer number (392586726).

Almost surely, 2^2187268863 is an apocalyptic number.

2187268863 is a deficient number, since it is larger than the sum of its proper divisors (953424945).

2187268863 is a wasteful number, since it uses less digits than its factorization.

2187268863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56083833.

The product of its digits is 1548288, while the sum is 51.

The square root of 2187268863 is about 46768.2463109320. The cubic root of 2187268863 is about 1298.0778028044.

The spelling of 2187268863 in words is "two billion, one hundred eighty-seven million, two hundred sixty-eight thousand, eight hundred sixty-three".