1013638 has 8 divisors (see below), whose sum is σ = 1569600. Its totient is φ = 490440.

The previous prime is 1013629. The next prime is 1013641. The reversal of 1013638 is 8363101.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8113 + ... + 8236.

It is an arithmetic number, because the mean of its divisors is an integer number (196200).

2^1013638 is an apocalyptic number.

1013638 is a deficient number, since it is larger than the sum of its proper divisors (555962).

1013638 is a wasteful number, since it uses less digits than its factorization.

1013638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16382.

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

The square root of 1013638 is about 1006.7959078185. The cubic root of 1013638 is about 100.4525489055.

Adding to 1013638 its reverse (8363101), we get a palindrome (9376739).

The spelling of 1013638 in words is "one million, thirteen thousand, six hundred thirty-eight".