1641285328 has 40 divisors (see below), whose sum is σ = 3286853120. Its totient is φ = 793134720.

The previous prime is 1641285323. The next prime is 1641285343. The reversal of 1641285328 is 8235821461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641285323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492853 + ... + 496171.

It is an arithmetic number, because the mean of its divisors is an integer number (82171328).

Almost surely, 2^1641285328 is an apocalyptic number.

It is an amenable number.

1641285328 is an abundant number, since it is smaller than the sum of its proper divisors (1645567792).

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

1641285328 is a wasteful number, since it uses less digits than its factorization.

1641285328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355 (or 4349 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 1641285328 is about 40512.7798108202. The cubic root of 1641285328 is about 1179.5817075276.

The spelling of 1641285328 in words is "one billion, six hundred forty-one million, two hundred eighty-five thousand, three hundred twenty-eight".