2153938 has 8 divisors (see below), whose sum is σ = 3275388. Its totient is φ = 1062144.

The previous prime is 2153929. The next prime is 2153939. The reversal of 2153938 is 8393512.

It is a happy number.

2153938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2152089 + 1849 = 1467^2 + 43^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2153939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7231 + ... + 7522.

2^2153938 is an apocalyptic number.

2153938 is a deficient number, since it is larger than the sum of its proper divisors (1121450).

2153938 is a wasteful number, since it uses less digits than its factorization.

2153938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14828.

The product of its digits is 6480, while the sum is 31.

The square root of 2153938 is about 1467.6300623795. The cubic root of 2153938 is about 129.1450404769.

The spelling of 2153938 in words is "two million, one hundred fifty-three thousand, nine hundred thirty-eight".