1157591443 has 4 divisors (see below), whose sum is σ = 1159243488. Its totient is φ = 1155939400.

The previous prime is 1157591423. The next prime is 1157591447. The reversal of 1157591443 is 3441957511.

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 1157591443 - 2²⁵ = 1124037011 is a prime.

It is a super-3 number, since 3×1157591443³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157591396 and 1157591405.

It is not an unprimeable number, because it can be changed into a prime (1157591447) 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, 824971 + ... + 826372.

It is an arithmetic number, because the mean of its divisors is an integer number (289810872).

Almost surely, 2^1157591443 is an apocalyptic number.

1157591443 is a deficient number, since it is larger than the sum of its proper divisors (1652045).

1157591443 is an equidigital number, since it uses as much as digits as its factorization.

1157591443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652044.

The product of its digits is 75600, while the sum is 40.

The square root of 1157591443 is about 34023.3955242565. The cubic root of 1157591443 is about 1049.9898541726.

The spelling of 1157591443 in words is "one billion, one hundred fifty-seven million, five hundred ninety-one thousand, four hundred forty-three".