1158749855 has 4 divisors (see below), whose sum is σ = 1390499832. Its totient is φ = 926999880.

The previous prime is 1158749849. The next prime is 1158749857. The reversal of 1158749855 is 5589478511.

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

It is not a de Polignac number, because 1158749855 - 2¹⁰ = 1158748831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1158749797 and 1158749806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158749857) 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, 115874981 + ... + 115874990.

It is an arithmetic number, because the mean of its divisors is an integer number (347624958).

Almost surely, 2^1158749855 is an apocalyptic number.

1158749855 is a deficient number, since it is larger than the sum of its proper divisors (231749977).

1158749855 is an equidigital number, since it uses as much as digits as its factorization.

1158749855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231749976.

The product of its digits is 2016000, while the sum is 53.

The square root of 1158749855 is about 34040.4150239094. The cubic root of 1158749855 is about 1050.3399821191.

The spelling of 1158749855 in words is "one billion, one hundred fifty-eight million, seven hundred forty-nine thousand, eight hundred fifty-five".