1650937728 has 256 divisors, whose sum is σ = 5144912640. Its totient is φ = 463503360.

The previous prime is 1650937727. The next prime is 1650937741. The reversal of 1650937728 is 8277390561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650937727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5959926 + ... + 5960202.

It is an arithmetic number, because the mean of its divisors is an integer number (20097315).

Almost surely, 2^1650937728 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 1650937728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572456320).

1650937728 is an abundant number, since it is smaller than the sum of its proper divisors (3493974912).

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

1650937728 is a wasteful number, since it uses less digits than its factorization.

1650937728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 1650937728 is about 40631.7330174336. The cubic root of 1650937728 is about 1181.8895628336.

The spelling of 1650937728 in words is "one billion, six hundred fifty million, nine hundred thirty-seven thousand, seven hundred twenty-eight".