1158118511 has 16 divisors (see below), whose sum is σ = 1273671168. Its totient is φ = 1044316800.

The previous prime is 1158118487. The next prime is 1158118519.

1158118511 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1158118511 - 2¹⁰ = 1158117487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158118519) 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, 813146 + ... + 814568.

It is an arithmetic number, because the mean of its divisors is an integer number (79604448).

Almost surely, 2^1158118511 is an apocalyptic number.

1158118511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1158118511 is a deficient number, since it is larger than the sum of its proper divisors (115552657).

1158118511 is a wasteful number, since it uses less digits than its factorization.

1158118511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982.

The product of its digits is 1600, while the sum is 32.

The square root of 1158118511 is about 34031.1403129545. The cubic root of 1158118511 is about 1050.1491884766.

The spelling of 1158118511 in words is "one billion, one hundred fifty-eight million, one hundred eighteen thousand, five hundred eleven".