2138738 has 8 divisors (see below), whose sum is σ = 3666432. Its totient is φ = 916596.

The previous prime is 2138737. The next prime is 2138743. The reversal of 2138738 is 8378312.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2138737) 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, 76370 + ... + 76397.

It is an arithmetic number, because the mean of its divisors is an integer number (458304).

2^2138738 is an apocalyptic number.

2138738 is a deficient number, since it is larger than the sum of its proper divisors (1527694).

2138738 is a wasteful number, since it uses less digits than its factorization.

2138738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152776.

The product of its digits is 8064, while the sum is 32.

The square root of 2138738 is about 1462.4424775013. The cubic root of 2138738 is about 128.8405376947.

The spelling of 2138738 in words is "two million, one hundred thirty-eight thousand, seven hundred thirty-eight".