1185227880 has 32 divisors (see below), whose sum is σ = 3555684000. Its totient is φ = 316060736.

The previous prime is 1185227873. The next prime is 1185227887. The reversal of 1185227880 is 887225811.

It is an interprime number because it is at equal distance from previous prime (1185227873) and next prime (1185227887).

It is not an unprimeable number, because it can be changed into a prime (1185227887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4938330 + ... + 4938569.

It is an arithmetic number, because the mean of its divisors is an integer number (111115125).

Almost surely, 2^1185227880 is an apocalyptic number.

1185227880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1185227880 is an abundant number, since it is smaller than the sum of its proper divisors (2370456120).

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

1185227880 is a wasteful number, since it uses less digits than its factorization.

1185227880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9876913 (or 9876909 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 1185227880 is about 34427.1387135208. The cubic root of 1185227880 is about 1058.2800754126.

The spelling of 1185227880 in words is "one billion, one hundred eighty-five million, two hundred twenty-seven thousand, eight hundred eighty".