1158001818 has 16 divisors (see below), whose sum is σ = 2452239360. Its totient is φ = 363294656.

The previous prime is 1158001783. The next prime is 1158001841. The reversal of 1158001818 is 8181008511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5676378 + ... + 5676581.

It is an arithmetic number, because the mean of its divisors is an integer number (153264960).

Almost surely, 2^1158001818 is an apocalyptic number.

1158001818 is an abundant number, since it is smaller than the sum of its proper divisors (1294237542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1158001818 is a wasteful number, since it uses less digits than its factorization.

1158001818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11352981.

The product of its (nonzero) digits is 2560, while the sum is 33.

The square root of 1158001818 is about 34029.4257665333. The cubic root of 1158001818 is about 1050.1139159853.

The spelling of 1158001818 in words is "one billion, one hundred fifty-eight million, one thousand, eight hundred eighteen".