1680032279 has 8 divisors (see below), whose sum is σ = 1699501440. Its totient is φ = 1660624056.

The previous prime is 1680032267. The next prime is 1680032311. The reversal of 1680032279 is 9722300861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680032279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680032579) 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, 41432 + ... + 71250.

It is an arithmetic number, because the mean of its divisors is an integer number (212437680).

Almost surely, 2^1680032279 is an apocalyptic number.

1680032279 is a deficient number, since it is larger than the sum of its proper divisors (19469161).

1680032279 is a wasteful number, since it uses less digits than its factorization.

1680032279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30469.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1680032279 is about 40988.1968254277. The cubic root of 1680032279 is about 1188.7920041490.

The spelling of 1680032279 in words is "one billion, six hundred eighty million, thirty-two thousand, two hundred seventy-nine".