2181362 has 4 divisors (see below), whose sum is σ = 3272046. Its totient is φ = 1090680.

The previous prime is 2181359. The next prime is 2181373. The reversal of 2181362 is 2631812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 519841 = 1289^2 + 721^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545339 + ... + 545342.

2^2181362 is an apocalyptic number.

2181362 is a deficient number, since it is larger than the sum of its proper divisors (1090684).

2181362 is a wasteful number, since it uses less digits than its factorization.

2181362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090683.

The product of its digits is 576, while the sum is 23.

The square root of 2181362 is about 1476.9434654041. The cubic root of 2181362 is about 129.6908234596.

The spelling of 2181362 in words is "two million, one hundred eighty-one thousand, three hundred sixty-two".