2187968459 has 8 divisors (see below), whose sum is σ = 2318476608. Its totient is φ = 2057660800.

The previous prime is 2187968443. The next prime is 2187968473. The reversal of 2187968459 is 9548697812.

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 2187968459 - 2⁴ = 2187968443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2187968398 and 2187968407.

It is not an unprimeable number, because it can be changed into a prime (2187968479) 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, 27347 + ... + 71580.

It is an arithmetic number, because the mean of its divisors is an integer number (289809576).

Almost surely, 2^2187968459 is an apocalyptic number.

2187968459 is a deficient number, since it is larger than the sum of its proper divisors (130508149).

2187968459 is a wasteful number, since it uses less digits than its factorization.

2187968459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100245.

The product of its digits is 8709120, while the sum is 59.

The square root of 2187968459 is about 46775.7251039468. The cubic root of 2187968459 is about 1298.2161843952.

The spelling of 2187968459 in words is "two billion, one hundred eighty-seven million, nine hundred sixty-eight thousand, four hundred fifty-nine".