1138380 has 24 divisors (see below), whose sum is σ = 3187632. Its totient is φ = 303552.

The previous prime is 1138369. The next prime is 1138391. The reversal of 1138380 is 838311.

It is an interprime number because it is at equal distance from previous prime (1138369) and next prime (1138391).

It is a self number, because there is not a number n which added to its sum of digits gives 1138380.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9427 + ... + 9546.

It is an arithmetic number, because the mean of its divisors is an integer number (132818).

2^1138380 is an apocalyptic number.

1138380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138380 is an abundant number, since it is smaller than the sum of its proper divisors (2049252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138380 is a wasteful number, since it uses less digits than its factorization.

1138380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18985 (or 18983 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1138380 is about 1066.9489209892. The cubic root of 1138380 is about 104.4148860910.

The spelling of 1138380 in words is "one million, one hundred thirty-eight thousand, three hundred eighty".