1138655 has 8 divisors (see below), whose sum is σ = 1561632. Its totient is φ = 780768.

The previous prime is 1138649. The next prime is 1138667. The reversal of 1138655 is 5568311.

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

It is a cyclic number.

It is not a de Polignac number, because 1138655 - 2⁴ = 1138639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16232 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (195204).

2^1138655 is an apocalyptic number.

1138655 is a deficient number, since it is larger than the sum of its proper divisors (422977).

1138655 is an equidigital number, since it uses as much as digits as its factorization.

1138655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32545.

The product of its digits is 3600, while the sum is 29.

The square root of 1138655 is about 1067.0777853559. The cubic root of 1138655 is about 104.4232932959.

The spelling of 1138655 in words is "one million, one hundred thirty-eight thousand, six hundred fifty-five".