2187138 has 8 divisors (see below), whose sum is σ = 4374288. Its totient is φ = 729044.

The previous prime is 2187121. The next prime is 2187149. The reversal of 2187138 is 8317812.

It is a happy number.

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

2187138 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182256 + ... + 182267.

It is an arithmetic number, because the mean of its divisors is an integer number (546786).

2^2187138 is an apocalyptic number.

2187138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2187138 is a wasteful number, since it uses less digits than its factorization.

2187138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364528.

The product of its digits is 2688, while the sum is 30.

The square root of 2187138 is about 1478.8975623754. The cubic root of 2187138 is about 129.8051914546.

The spelling of 2187138 in words is "two million, one hundred eighty-seven thousand, one hundred thirty-eight".