1132599891 has 16 divisors (see below), whose sum is σ = 1620873504. Its totient is φ = 700913664.

The previous prime is 1132599887. The next prime is 1132599913. The reversal of 1132599891 is 1989952311.

It is not a de Polignac number, because 1132599891 - 2² = 1132599887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1132599891.

It is not an unprimeable number, because it can be changed into a prime (1132594891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148386 + ... + 155831.

It is an arithmetic number, because the mean of its divisors is an integer number (101304594).

Almost surely, 2^1132599891 is an apocalyptic number.

1132599891 is a deficient number, since it is larger than the sum of its proper divisors (488273613).

1132599891 is a wasteful number, since it uses less digits than its factorization.

1132599891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304310.

The product of its digits is 174960, while the sum is 48.

The square root of 1132599891 is about 33654.1214563685. The cubic root of 1132599891 is about 1042.3786442132.

The spelling of 1132599891 in words is "one billion, one hundred thirty-two million, five hundred ninety-nine thousand, eight hundred ninety-one".