1135898943 has 4 divisors (see below), whose sum is σ = 1514531928. Its totient is φ = 757265960.

The previous prime is 1135898923. The next prime is 1135898957. The reversal of 1135898943 is 3498985311.

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 1135898943 - 2⁹ = 1135898431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135898923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189316488 + ... + 189316493.

It is an arithmetic number, because the mean of its divisors is an integer number (378632982).

Almost surely, 2^1135898943 is an apocalyptic number.

1135898943 is a deficient number, since it is larger than the sum of its proper divisors (378632985).

1135898943 is an equidigital number, since it uses as much as digits as its factorization.

1135898943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378632984.

The product of its digits is 933120, while the sum is 51.

The square root of 1135898943 is about 33703.0999019378. The cubic root of 1135898943 is about 1043.3897479138.

The spelling of 1135898943 in words is "one billion, one hundred thirty-five million, eight hundred ninety-eight thousand, nine hundred forty-three".