1680051564 has 24 divisors (see below), whose sum is σ = 4355689520. Its totient is φ = 560017152.

The previous prime is 1680051559. The next prime is 1680051641. The reversal of 1680051564 is 4651500861.

1680051564 is a `hidden beast` number, since 1 + 6 + 80 + 0 + 515 + 64 = 666.

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

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, 7777909 + ... + 7778124.

Almost surely, 2^1680051564 is an apocalyptic number.

It is an amenable number.

1680051564 is an abundant number, since it is smaller than the sum of its proper divisors (2675637956).

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

1680051564 is a wasteful number, since it uses less digits than its factorization.

1680051564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15556046 (or 15556038 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1680051564 is about 40988.4320754039. The cubic root of 1680051564 is about 1188.7965528247.

The spelling of 1680051564 in words is "one billion, six hundred eighty million, fifty-one thousand, five hundred sixty-four".