1680371238 has 128 divisors (see below), whose sum is σ = 4231987200. Its totient is φ = 433060992.

The previous prime is 1680371233. The next prime is 1680371263. The reversal of 1680371238 is 8321730861.

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

It is a junction number, because it is equal to n+sod(n) for n = 1680371196 and 1680371205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680371233) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 7030723 + ... + 7030961.

It is an arithmetic number, because the mean of its divisors is an integer number (33062400).

Almost surely, 2^1680371238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1680371238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2115993600).

1680371238 is an abundant number, since it is smaller than the sum of its proper divisors (2551615962).

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

1680371238 is a wasteful number, since it uses less digits than its factorization.

1680371238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1680371238 is about 40992.3314535780. The cubic root of 1680371238 is about 1188.8719479805.

The spelling of 1680371238 in words is "one billion, six hundred eighty million, three hundred seventy-one thousand, two hundred thirty-eight".