1180858644 has 108 divisors (see below), whose sum is σ = 3546414144. Its totient is φ = 330186528.

The previous prime is 1180858639. The next prime is 1180858681. The reversal of 1180858644 is 4468580811.

It is a self number, because there is not a number n which added to its sum of digits gives 1180858644.

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 75787 + ... + 90029.

It is an arithmetic number, because the mean of its divisors is an integer number (32837168).

Almost surely, 2^1180858644 is an apocalyptic number.

1180858644 is a gapful number since it is divisible by the number (14) 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 1180858644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1773207072).

1180858644 is an abundant number, since it is smaller than the sum of its proper divisors (2365555500).

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

1180858644 is a wasteful number, since it uses less digits than its factorization.

1180858644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14314 (or 14302 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 1180858644 is about 34363.6238484826. The cubic root of 1180858644 is about 1056.9780560624.

The spelling of 1180858644 in words is "one billion, one hundred eighty million, eight hundred fifty-eight thousand, six hundred forty-four".