2180859 has 4 divisors (see below), whose sum is σ = 2907816. Its totient is φ = 1453904.

The previous prime is 2180833. The next prime is 2180863. The reversal of 2180859 is 9580812.

It is a happy number.

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 2180859 - 2⁸ = 2180603 is a prime.

It is a super-2 number, since 2×2180859² = 9512291955762, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2180159) 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, 363474 + ... + 363479.

It is an arithmetic number, because the mean of its divisors is an integer number (726954).

2^2180859 is an apocalyptic number.

2180859 is a deficient number, since it is larger than the sum of its proper divisors (726957).

2180859 is an equidigital number, since it uses as much as digits as its factorization.

2180859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726956.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2180859 is about 1476.7731714790. The cubic root of 2180859 is about 129.6808542295.

The spelling of 2180859 in words is "two million, one hundred eighty thousand, eight hundred fifty-nine".