1188028485 has 128 divisors (see below), whose sum is σ = 2565734400. Its totient is φ = 509483520.

The previous prime is 1188028483. The next prime is 1188028487. The reversal of 1188028485 is 5848208811.

It is an interprime number because it is at equal distance from previous prime (1188028483) and next prime (1188028487).

It is not a de Polignac number, because 1188028485 - 2¹ = 1188028483 is a prime.

It is a super-2 number, since 2×1188028485² = 2822823362342790450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1188028485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188028483) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2280025 + ... + 2280545.

It is an arithmetic number, because the mean of its divisors is an integer number (20044800).

Almost surely, 2^1188028485 is an apocalyptic number.

1188028485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1188028485 is an abundant number, since it is smaller than the sum of its proper divisors (1377705915).

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

1188028485 is a wasteful number, since it uses less digits than its factorization.

1188028485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 45.

The square root of 1188028485 is about 34467.7890935871. The cubic root of 1188028485 is about 1059.1129653427.

The spelling of 1188028485 in words is "one billion, one hundred eighty-eight million, twenty-eight thousand, four hundred eighty-five".