2180493 has 32 divisors (see below), whose sum is σ = 3763200. Its totient is φ = 1222128.

The previous prime is 2180491. The next prime is 2180501. The reversal of 2180493 is 3940812.

It is not a de Polignac number, because 2180493 - 2¹ = 2180491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2²¹ + 1 + 8³ + 0 + 4⁶ + 9⁵ + 3⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15618 + ... + 15756.

It is an arithmetic number, because the mean of its divisors is an integer number (117600).

2^2180493 is an apocalyptic number.

It is an amenable number.

2180493 is a deficient number, since it is larger than the sum of its proper divisors (1582707).

2180493 is a wasteful number, since it uses less digits than its factorization.

2180493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2180493 is about 1476.6492474518. The cubic root of 2180493 is about 129.6735993133.

The spelling of 2180493 in words is "two million, one hundred eighty thousand, four hundred ninety-three".