1138382685 has 24 divisors (see below), whose sum is σ = 2152579104. Its totient is φ = 551942880.

The previous prime is 1138382681. The next prime is 1138382699. The reversal of 1138382685 is 5862838311.

1138382685 is a `hidden beast` number, since 1 + 1 + 383 + 8 + 268 + 5 = 666.

It is not a de Polignac number, because 1138382685 - 2² = 1138382681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138382685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138382681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1149387 + ... + 1150376.

It is an arithmetic number, because the mean of its divisors is an integer number (89690796).

Almost surely, 2^1138382685 is an apocalyptic number.

1138382685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1138382685 is a deficient number, since it is larger than the sum of its proper divisors (1014196419).

1138382685 is a wasteful number, since it uses less digits than its factorization.

1138382685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299785 (or 2299782 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 1138382685 is about 33739.9271635254. The cubic root of 1138382685 is about 1044.1496818239.

The spelling of 1138382685 in words is "one billion, one hundred thirty-eight million, three hundred eighty-two thousand, six hundred eighty-five".