2145718 has 4 divisors (see below), whose sum is σ = 3218580. Its totient is φ = 1072858.

The previous prime is 2145713. The next prime is 2145721. The reversal of 2145718 is 8175412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536428 + ... + 536431.

It is an arithmetic number, because the mean of its divisors is an integer number (804645).

2^2145718 is an apocalyptic number.

2145718 is a deficient number, since it is larger than the sum of its proper divisors (1072862).

2145718 is a wasteful number, since it uses less digits than its factorization.

2145718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072861.

The product of its digits is 2240, while the sum is 28.

The square root of 2145718 is about 1464.8269522370. The cubic root of 2145718 is about 128.9805471138.

The spelling of 2145718 in words is "two million, one hundred forty-five thousand, seven hundred eighteen".