1685071552 has 28 divisors (see below), whose sum is σ = 3540511080. Its totient is φ = 792974336.

The previous prime is 1685071547. The next prime is 1685071579. The reversal of 1685071552 is 2551705861.

It is a happy number.

It is a super-2 number, since 2×1685071552² = 5678932270719377408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773302 + ... + 775477.

Almost surely, 2^1685071552 is an apocalyptic number.

It is an amenable number.

1685071552 is an abundant number, since it is smaller than the sum of its proper divisors (1855439528).

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

1685071552 is a wasteful number, since it uses less digits than its factorization.

1685071552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548808 (or 1548798 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 40.

The square root of 1685071552 is about 41049.6230433362. The cubic root of 1685071552 is about 1189.9794154102.

The spelling of 1685071552 in words is "one billion, six hundred eighty-five million, seventy-one thousand, five hundred fifty-two".