1685786252 has 6 divisors (see below), whose sum is σ = 2950125948. Its totient is φ = 842893124.

The previous prime is 1685786251. The next prime is 1685786273. The reversal of 1685786252 is 2526875861.

It is a self number, because there is not a number n which added to its sum of digits gives 1685786252.

It is not an unprimeable number, because it can be changed into a prime (1685786251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210723278 + ... + 210723285.

It is an arithmetic number, because the mean of its divisors is an integer number (491687658).

Almost surely, 2^1685786252 is an apocalyptic number.

It is an amenable number.

1685786252 is a deficient number, since it is larger than the sum of its proper divisors (1264339696).

1685786252 is a wasteful number, since it uses less digits than its factorization.

1685786252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421446567 (or 421446565 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 1685786252 is about 41058.3274379266. The cubic root of 1685786252 is about 1190.1476294496.

The spelling of 1685786252 in words is "one billion, six hundred eighty-five million, seven hundred eighty-six thousand, two hundred fifty-two".