1860641328 has 360 divisors, whose sum is σ = 6291311616. Its totient is φ = 471744000.

The previous prime is 1860641323. The next prime is 1860641369. The reversal of 1860641328 is 8231460681.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1860641323) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12322053 + ... + 12322203.

Almost surely, 2^1860641328 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 1860641328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3145655808).

1860641328 is an abundant number, since it is smaller than the sum of its proper divisors (4430670288).

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

1860641328 is a wasteful number, since it uses less digits than its factorization.

1860641328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1860641328 is about 43135.1518833538. The cubic root of 1860641328 is about 1229.9502762634.

The spelling of 1860641328 in words is "one billion, eight hundred sixty million, six hundred forty-one thousand, three hundred twenty-eight".