2145938 has 4 divisors (see below), whose sum is σ = 3218910. Its totient is φ = 1072968.

The previous prime is 2145937. The next prime is 2145953. The reversal of 2145938 is 8395412.

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., 1646089 + 499849 = 1283^2 + 707^2 .

It is not an unprimeable number, because it can be changed into a prime (2145937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536483 + ... + 536486.

2^2145938 is an apocalyptic number.

2145938 is a deficient number, since it is larger than the sum of its proper divisors (1072972).

2145938 is a wasteful number, since it uses less digits than its factorization.

2145938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072971.

The product of its digits is 8640, while the sum is 32.

The square root of 2145938 is about 1464.9020445067. The cubic root of 2145938 is about 128.9849550789.

The spelling of 2145938 in words is "two million, one hundred forty-five thousand, nine hundred thirty-eight".