1180836866 has 16 divisors (see below), whose sum is σ = 1943079840. Its totient is φ = 533743680.

The previous prime is 1180836863. The next prime is 1180836887. The reversal of 1180836866 is 6686380811.

It is a self number, because there is not a number n which added to its sum of digits gives 1180836866.

It is not an unprimeable number, because it can be changed into a prime (1180836863) 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, 145991 + ... + 153866.

It is an arithmetic number, because the mean of its divisors is an integer number (121442490).

Almost surely, 2^1180836866 is an apocalyptic number.

1180836866 is a deficient number, since it is larger than the sum of its proper divisors (762242974).

1180836866 is a wasteful number, since it uses less digits than its factorization.

1180836866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300049.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 1180836866 is about 34363.3069712448. The cubic root of 1180836866 is about 1056.9715582456.

The spelling of 1180836866 in words is "one billion, one hundred eighty million, eight hundred thirty-six thousand, eight hundred sixty-six".