1685375992 has 16 divisors (see below), whose sum is σ = 3162495600. Its totient is φ = 842043840.

The previous prime is 1685375987. The next prime is 1685375999. The reversal of 1685375992 is 2995735861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685375999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69309 + ... + 90412.

It is an arithmetic number, because the mean of its divisors is an integer number (197655975).

Almost surely, 2^1685375992 is an apocalyptic number.

It is an amenable number.

1685375992 is a deficient number, since it is larger than the sum of its proper divisors (1477119608).

1685375992 is a wasteful number, since it uses less digits than its factorization.

1685375992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161046 (or 161042 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 55.

The square root of 1685375992 is about 41053.3310706939. The cubic root of 1685375992 is about 1190.0510751799.

The spelling of 1685375992 in words is "one billion, six hundred eighty-five million, three hundred seventy-five thousand, nine hundred ninety-two".