1186995660 has 24 divisors (see below), whose sum is σ = 3323588016. Its totient is φ = 316532160.

The previous prime is 1186995653. The next prime is 1186995671. The reversal of 1186995660 is 665996811.

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, 9891571 + ... + 9891690.

It is an arithmetic number, because the mean of its divisors is an integer number (138482834).

Almost surely, 2^1186995660 is an apocalyptic number.

1186995660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1186995660 is an abundant number, since it is smaller than the sum of its proper divisors (2136592356).

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

1186995660 is a wasteful number, since it uses less digits than its factorization.

1186995660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19783273 (or 19783271 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 1186995660 is about 34452.8033692470. The cubic root of 1186995660 is about 1058.8059593780.

The spelling of 1186995660 in words is "one billion, one hundred eighty-six million, nine hundred ninety-five thousand, six hundred sixty".