1180431618 has 64 divisors (see below), whose sum is σ = 2556479232. Its totient is φ = 362004480.

The previous prime is 1180431613. The next prime is 1180431641. The reversal of 1180431618 is 8161340811.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1180431613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1200355 + ... + 1201337.

It is an arithmetic number, because the mean of its divisors is an integer number (39944988).

Almost surely, 2^1180431618 is an apocalyptic number.

1180431618 is an abundant number, since it is smaller than the sum of its proper divisors (1376047614).

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

1180431618 is a wasteful number, since it uses less digits than its factorization.

1180431618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1180431618 is about 34357.4099431258. The cubic root of 1180431618 is about 1056.8506314036.

The spelling of 1180431618 in words is "one billion, one hundred eighty million, four hundred thirty-one thousand, six hundred eighteen".