2154918 has 8 divisors (see below), whose sum is σ = 4309848. Its totient is φ = 718304.

The previous prime is 2154913. The next prime is 2154931. The reversal of 2154918 is 8194512.

It is a happy number.

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

2154918 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154913) 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, 179571 + ... + 179582.

It is an arithmetic number, because the mean of its divisors is an integer number (538731).

2^2154918 is an apocalyptic number.

2154918 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.

2154918 is a wasteful number, since it uses less digits than its factorization.

2154918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359158.

The product of its digits is 2880, while the sum is 30.

The square root of 2154918 is about 1467.9638960138. The cubic root of 2154918 is about 129.1646236698.

The spelling of 2154918 in words is "two million, one hundred fifty-four thousand, nine hundred eighteen".