2638373 has 4 divisors (see below), whose sum is σ = 2646540. Its totient is φ = 2630208.

The previous prime is 2638369. The next prime is 2638381. The reversal of 2638373 is 3738362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3738362 = 2 ⋅1869181.

It can be written as a sum of positive squares in 2 ways, for example, as 515524 + 2122849 = 718^2 + 1457^2 .

It is a cyclic number.

It is not a de Polignac number, because 2638373 - 2² = 2638369 is a prime.

It is a super-2 number, since 2×2638373² = 13922024174258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3578 + ... + 4251.

It is an arithmetic number, because the mean of its divisors is an integer number (661635).

2^2638373 is an apocalyptic number.

It is an amenable number.

2638373 is a deficient number, since it is larger than the sum of its proper divisors (8167).

2638373 is an equidigital number, since it uses as much as digits as its factorization.

2638373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8166.

The product of its digits is 18144, while the sum is 32.

The square root of 2638373 is about 1624.3069291239. The cubic root of 2638373 is about 138.1800666985.

The spelling of 2638373 in words is "two million, six hundred thirty-eight thousand, three hundred seventy-three".