1103638 has 16 divisors (see below), whose sum is σ = 1740816. Its totient is φ = 524160.

The previous prime is 1103633. The next prime is 1103639. The reversal of 1103638 is 8363011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3370 + ... + 3682.

It is an arithmetic number, because the mean of its divisors is an integer number (108801).

2^1103638 is an apocalyptic number.

1103638 is a deficient number, since it is larger than the sum of its proper divisors (637178).

1103638 is a wasteful number, since it uses less digits than its factorization.

1103638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1103638 is about 1050.5417649956. The cubic root of 1103638 is about 103.3416873810.

Adding to 1103638 its reverse (8363011), we get a palindrome (9466649).

The spelling of 1103638 in words is "one million, one hundred three thousand, six hundred thirty-eight".