1688234812 has 12 divisors (see below), whose sum is σ = 3222993816. Its totient is φ = 767379440.

The previous prime is 1688234809. The next prime is 1688234831. The reversal of 1688234812 is 2184328861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19184443 + ... + 19184530.

It is an arithmetic number, because the mean of its divisors is an integer number (268582818).

Almost surely, 2^1688234812 is an apocalyptic number.

It is an amenable number.

1688234812 is a deficient number, since it is larger than the sum of its proper divisors (1534759004).

1688234812 is a wasteful number, since it uses less digits than its factorization.

1688234812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38368988 (or 38368986 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 1688234812 is about 41088.1346863057. The cubic root of 1688234812 is about 1190.7235700245.

The spelling of 1688234812 in words is "one billion, six hundred eighty-eight million, two hundred thirty-four thousand, eight hundred twelve".