1000534391 has 4 divisors (see below), whose sum is σ = 1000638192. Its totient is φ = 1000430592.

The previous prime is 1000534361. The next prime is 1000534397. The reversal of 1000534391 is 1934350001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000534391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000534391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000534397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35771 + ... + 57276.

It is an arithmetic number, because the mean of its divisors is an integer number (250159548).

Almost surely, 2^1000534391 is an apocalyptic number.

1000534391 is a deficient number, since it is larger than the sum of its proper divisors (103801).

1000534391 is an equidigital number, since it uses as much as digits as its factorization.

1000534391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103800.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1000534391 is about 31631.2249367615. The cubic root of 1000534391 is about 1000.1780986123.

Adding to 1000534391 its reverse (1934350001), we get a palindrome (2934884392).

The spelling of 1000534391 in words is "one billion, five hundred thirty-four thousand, three hundred ninety-one".