1059530891 has 4 divisors (see below), whose sum is σ = 1061336472. Its totient is φ = 1057725312.

The previous prime is 1059530869. The next prime is 1059530929. The reversal of 1059530891 is 1980359501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1059530891 - 2¹⁸ = 1059268747 is a prime.

It is a super-2 number, since 2×1059530891² = 2245211417966507762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1059530861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901910 + ... + 903083.

It is an arithmetic number, because the mean of its divisors is an integer number (265334118).

Almost surely, 2^1059530891 is an apocalyptic number.

1059530891 is a deficient number, since it is larger than the sum of its proper divisors (1805581).

1059530891 is an equidigital number, since it uses as much as digits as its factorization.

1059530891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805580.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 1059530891 is about 32550.4361107497. The cubic root of 1059530891 is about 1019.4623884196.

The spelling of 1059530891 in words is "one billion, fifty-nine million, five hundred thirty thousand, eight hundred ninety-one".