1680046460 has 24 divisors (see below), whose sum is σ = 3531786720. Its totient is φ = 671315904.

The previous prime is 1680046447. The next prime is 1680046513. The reversal of 1680046460 is 646400861.

It is a super-2 number, since 2×1680046460² = 5645112215517063200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1680046460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24095 + ... + 62774.

It is an arithmetic number, because the mean of its divisors is an integer number (147157780).

Almost surely, 2^1680046460 is an apocalyptic number.

1680046460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1680046460 is an abundant number, since it is smaller than the sum of its proper divisors (1851740260).

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

1680046460 is a wasteful number, since it uses less digits than its factorization.

1680046460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87845 (or 87843 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 1680046460 is about 40988.3698138875. The cubic root of 1680046460 is about 1188.7953489680.

The spelling of 1680046460 in words is "one billion, six hundred eighty million, forty-six thousand, four hundred sixty".