1680430752 has 768 divisors, whose sum is σ = 6909235200. Its totient is φ = 383201280.

The previous prime is 1680430751. The next prime is 1680430753. The reversal of 1680430752 is 2570340861.

It is an interprime number because it is at equal distance from previous prime (1680430751) and next prime (1680430753).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1680430751) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25081023 + ... + 25081089.

It is an arithmetic number, because the mean of its divisors is an integer number (8996400).

Almost surely, 2^1680430752 is an apocalyptic number.

1680430752 is a gapful number since it is divisible by the number (12) 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 1680430752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3454617600).

1680430752 is an abundant number, since it is smaller than the sum of its proper divisors (5228804448).

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

1680430752 is a wasteful number, since it uses less digits than its factorization.

1680430752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1680430752 is about 40993.0573634122. The cubic root of 1680430752 is about 1188.8859833096.

The spelling of 1680430752 in words is "one billion, six hundred eighty million, four hundred thirty thousand, seven hundred fifty-two".