1158998511 has 32 divisors (see below), whose sum is σ = 1788480000. Its totient is φ = 659809280.

The previous prime is 1158998509. The next prime is 1158998513.

1158998511 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (1158998509) and next prime (1158998513).

It is a cyclic number.

It is not a de Polignac number, because 1158998511 - 2¹ = 1158998509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158998513) 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 31 ways as a sum of consecutive naturals, for example, 334315 + ... + 337763.

It is an arithmetic number, because the mean of its divisors is an integer number (55890000).

Almost surely, 2^1158998511 is an apocalyptic number.

1158998511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1158998511 is a deficient number, since it is larger than the sum of its proper divisors (629481489).

1158998511 is a wasteful number, since it uses less digits than its factorization.

1158998511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079.

The product of its digits is 129600, while the sum is 48.

The square root of 1158998511 is about 34044.0671923905. The cubic root of 1158998511 is about 1050.4151075249.

The spelling of 1158998511 in words is "one billion, one hundred fifty-eight million, nine hundred ninety-eight thousand, five hundred eleven".