1180605861840 has 160 divisors (see below), whose sum is σ = 3791497507200. Its totient is φ = 303537203200.

The previous prime is 1180605861821. The next prime is 1180605861901. The reversal of 1180605861840 is 481685060811.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1180605861840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4757971 + ... + 4999949.

It is an arithmetic number, because the mean of its divisors is an integer number (23696859420).

Almost surely, 2^{1180605861840} is an apocalyptic number.

1180605861840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1180605861840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895748753600).

1180605861840 is an abundant number, since it is smaller than the sum of its proper divisors (2610891645360).

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

1180605861840 is a wasteful number, since it uses less digits than its factorization.

1180605861840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242725 (or 242719 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 1180605861840 in words is "one trillion, one hundred eighty billion, six hundred five million, eight hundred sixty-one thousand, eight hundred forty".