1118528385 has 32 divisors (see below), whose sum is σ = 2028754560. Its totient is φ = 521676288.

The previous prime is 1118528371. The next prime is 1118528399. The reversal of 1118528385 is 5838258111.

It is an interprime number because it is at equal distance from previous prime (1118528371) and next prime (1118528399).

It is not a de Polignac number, because 1118528385 - 2⁹ = 1118527873 is a prime.

It is a super-2 number, since 2×1118528385² = 2502211496101416450, which contains 22 as substring.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 147244 + ... + 154653.

It is an arithmetic number, because the mean of its divisors is an integer number (63398580).

Almost surely, 2^1118528385 is an apocalyptic number.

1118528385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1118528385 is a deficient number, since it is larger than the sum of its proper divisors (910226175).

1118528385 is a wasteful number, since it uses less digits than its factorization.

1118528385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301937.

The product of its digits is 76800, while the sum is 42.

The square root of 1118528385 is about 33444.4073800090. The cubic root of 1118528385 is about 1038.0437786192.

The spelling of 1118528385 in words is "one billion, one hundred eighteen million, five hundred twenty-eight thousand, three hundred eighty-five".