2103638 has 4 divisors (see below), whose sum is σ = 3155460. Its totient is φ = 1051818.

The previous prime is 2103617. The next prime is 2103653. The reversal of 2103638 is 8363012.

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

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525908 + ... + 525911.

It is an arithmetic number, because the mean of its divisors is an integer number (788865).

2^2103638 is an apocalyptic number.

2103638 is a deficient number, since it is larger than the sum of its proper divisors (1051822).

2103638 is a wasteful number, since it uses less digits than its factorization.

2103638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051821.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2103638 is about 1450.3923607080. The cubic root of 2103638 is about 128.1318222027.

The spelling of 2103638 in words is "two million, one hundred three thousand, six hundred thirty-eight".