1999685375 has 32 divisors (see below), whose sum is σ = 2540678400. Its totient is φ = 1571116800.

The previous prime is 1999685321. The next prime is 1999685383. The reversal of 1999685375 is 5735869991.

It is not a de Polignac number, because 1999685375 - 2⁸ = 1999685119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1924106 + ... + 1925144.

It is an arithmetic number, because the mean of its divisors is an integer number (79396200).

Almost surely, 2^1999685375 is an apocalyptic number.

1999685375 is a deficient number, since it is larger than the sum of its proper divisors (540993025).

1999685375 is a wasteful number, since it uses less digits than its factorization.

1999685375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1306 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 62.

The square root of 1999685375 is about 44717.8417972066. The cubic root of 1999685375 is about 1259.8549793201.

The spelling of 1999685375 in words is "one billion, nine hundred ninety-nine million, six hundred eighty-five thousand, three hundred seventy-five".