1009538 has 8 divisors (see below), whose sum is σ = 1518588. Its totient is φ = 503344.

The previous prime is 1009537. The next prime is 1009559. The reversal of 1009538 is 8359001.

It can be written as a sum of positive squares in 2 ways, for example, as 851929 + 157609 = 923^2 + 397^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1009531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 920 + ... + 1692.

2^1009538 is an apocalyptic number.

1009538 is a deficient number, since it is larger than the sum of its proper divisors (509050).

1009538 is an equidigital number, since it uses as much as digits as its factorization.

1009538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1009538 is about 1004.7576822299. The cubic root of 1009538 is about 100.3169278397.

The spelling of 1009538 in words is "one million, nine thousand, five hundred thirty-eight".