1680444372 has 48 divisors (see below), whose sum is σ = 4004582400. Its totient is φ = 548294880.

The previous prime is 1680444361. The next prime is 1680444383. The reversal of 1680444372 is 2734440861.

It is an interprime number because it is at equal distance from previous prime (1680444361) and next prime (1680444383).

It is a self number, because there is not a number n which added to its sum of digits gives 1680444372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164247 + ... + 174177.

It is an arithmetic number, because the mean of its divisors is an integer number (83428800).

Almost surely, 2^1680444372 is an apocalyptic number.

1680444372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1680444372 is an abundant number, since it is smaller than the sum of its proper divisors (2324138028).

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

1680444372 is a wasteful number, since it uses less digits than its factorization.

1680444372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236 (or 10234 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 1680444372 is about 40993.2234887670. The cubic root of 1680444372 is about 1188.8891953002.

The spelling of 1680444372 in words is "one billion, six hundred eighty million, four hundred forty-four thousand, three hundred seventy-two".