1180220544 has 160 divisors (see below), whose sum is σ = 3566838000. Its totient is φ = 387307008.

The previous prime is 1180220519. The next prime is 1180220557. The reversal of 1180220544 is 4450220811.

1180220544 is a `hidden beast` number, since 118 + 0 + 2 + 2 + 0 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 693807 + ... + 695505.

Almost surely, 2^1180220544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1180220544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783419000).

1180220544 is an abundant number, since it is smaller than the sum of its proper divisors (2386617456).

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

1180220544 is an equidigital number, since it uses as much as digits as its factorization.

1180220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1771 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1180220544 is about 34354.3380666838. The cubic root of 1180220544 is about 1056.7876355231.

The spelling of 1180220544 in words is "one billion, one hundred eighty million, two hundred twenty thousand, five hundred forty-four".