1680130457 has 12 divisors (see below), whose sum is σ = 1749069036. Its totient is φ = 1613801280.

The previous prime is 1680130453. The next prime is 1680130471. The reversal of 1680130457 is 7540310861.

It can be written as a sum of positive squares in 6 ways, for example, as 49505296 + 1630625161 = 7036^2 + 40381^2 .

It is not a de Polignac number, because 1680130457 - 2² = 1680130453 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680130453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160607 + ... + 170747.

It is an arithmetic number, because the mean of its divisors is an integer number (145755753).

Almost surely, 2^1680130457 is an apocalyptic number.

It is an amenable number.

1680130457 is a deficient number, since it is larger than the sum of its proper divisors (68938579).

1680130457 is a wasteful number, since it uses less digits than its factorization.

1680130457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10396 (or 10367 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1680130457 is about 40989.3944453928. The cubic root of 1680130457 is about 1188.8151606382.

The spelling of 1680130457 in words is "one billion, six hundred eighty million, one hundred thirty thousand, four hundred fifty-seven".