2187423863 has 8 divisors (see below), whose sum is σ = 2198246688. Its totient is φ = 2176620544.

The previous prime is 2187423859. The next prime is 2187423869. The reversal of 2187423863 is 3683247812.

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

It is a cyclic number.

It is not a de Polignac number, because 2187423863 - 2² = 2187423859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187423869) 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, 252695 + ... + 261207.

It is an arithmetic number, because the mean of its divisors is an integer number (274780836).

Almost surely, 2^2187423863 is an apocalyptic number.

2187423863 is a deficient number, since it is larger than the sum of its proper divisors (10822825).

2187423863 is an equidigital number, since it uses as much as digits as its factorization.

2187423863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9753.

The product of its digits is 387072, while the sum is 44.

The square root of 2187423863 is about 46769.9033888247. The cubic root of 2187423863 is about 1298.1084646814.

The spelling of 2187423863 in words is "two billion, one hundred eighty-seven million, four hundred twenty-three thousand, eight hundred sixty-three".