1684130520 has 32 divisors (see below), whose sum is σ = 5052391920. Its totient is φ = 449101440.

The previous prime is 1684130519. The next prime is 1684130527. The reversal of 1684130520 is 250314861.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684130527) 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, 7017091 + ... + 7017330.

Almost surely, 2^1684130520 is an apocalyptic number.

1684130520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1684130520 is an abundant number, since it is smaller than the sum of its proper divisors (3368261400).

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

1684130520 is a wasteful number, since it uses less digits than its factorization.

1684130520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14034435 (or 14034431 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1684130520 is about 41038.1593154469. The cubic root of 1684130520 is about 1189.7578586014.

The spelling of 1684130520 in words is "one billion, six hundred eighty-four million, one hundred thirty thousand, five hundred twenty".