1155642235 has 16 divisors (see below), whose sum is σ = 1601832672. Its totient is φ = 791027200.

The previous prime is 1155642233. The next prime is 1155642281. The reversal of 1155642235 is 5322465511.

It is not a de Polignac number, because 1155642235 - 2¹ = 1155642233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1155642235.

It is not an unprimeable number, because it can be changed into a prime (1155642233) 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 15 ways as a sum of consecutive naturals, for example, 617056 + ... + 618925.

It is an arithmetic number, because the mean of its divisors is an integer number (100114542).

Almost surely, 2^1155642235 is an apocalyptic number.

1155642235 is a deficient number, since it is larger than the sum of its proper divisors (446190437).

1155642235 is a wasteful number, since it uses less digits than its factorization.

1155642235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236014.

The product of its digits is 36000, while the sum is 34.

The square root of 1155642235 is about 33994.7383428671. The cubic root of 1155642235 is about 1049.4001819814.

The spelling of 1155642235 in words is "one billion, one hundred fifty-five million, six hundred forty-two thousand, two hundred thirty-five".