1138530 has 16 divisors (see below), whose sum is σ = 2732544. Its totient is φ = 303600.

The previous prime is 1138519. The next prime is 1138547. The reversal of 1138530 is 358311.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1138497 and 1138506.

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, 18946 + ... + 19005.

It is an arithmetic number, because the mean of its divisors is an integer number (170784).

2^1138530 is an apocalyptic number.

1138530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138530 is an abundant number, since it is smaller than the sum of its proper divisors (1594014).

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

1138530 is a wasteful number, since it uses less digits than its factorization.

1138530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37961.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1138530 is about 1067.0192125730. The cubic root of 1138530 is about 104.4194720069.

The spelling of 1138530 in words is "one million, one hundred thirty-eight thousand, five hundred thirty".