1684251852 has 12 divisors (see below), whose sum is σ = 3929921016. Its totient is φ = 561417280.

The previous prime is 1684251851. The next prime is 1684251857. The reversal of 1684251852 is 2581524861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1684251852³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1684251851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70177149 + ... + 70177172.

It is an arithmetic number, because the mean of its divisors is an integer number (327493418).

Almost surely, 2^1684251852 is an apocalyptic number.

1684251852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1684251852 is an abundant number, since it is smaller than the sum of its proper divisors (2245669164).

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

1684251852 is a wasteful number, since it uses less digits than its factorization.

1684251852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140354328 (or 140354326 counting only the distinct ones).

The product of its digits is 153600, while the sum is 42.

The square root of 1684251852 is about 41039.6375714991. The cubic root of 1684251852 is about 1189.7864296716.

The spelling of 1684251852 in words is "one billion, six hundred eighty-four million, two hundred fifty-one thousand, eight hundred fifty-two".