1118187660 has 24 divisors (see below), whose sum is σ = 3130925616. Its totient is φ = 298183360.

The previous prime is 1118187649. The next prime is 1118187683. The reversal of 1118187660 is 667818111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9318171 + ... + 9318290.

It is an arithmetic number, because the mean of its divisors is an integer number (130455234).

Almost surely, 2^1118187660 is an apocalyptic number.

1118187660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118187660 is an abundant number, since it is smaller than the sum of its proper divisors (2012737956).

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

1118187660 is a wasteful number, since it uses less digits than its factorization.

1118187660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18636473 (or 18636471 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The square root of 1118187660 is about 33439.3130910310. The cubic root of 1118187660 is about 1037.9383652950.

The spelling of 1118187660 in words is "one billion, one hundred eighteen million, one hundred eighty-seven thousand, six hundred sixty".