1685097923 has 4 divisors (see below), whose sum is σ = 1700010408. Its totient is φ = 1670185440.

The previous prime is 1685097917. The next prime is 1685097937. The reversal of 1685097923 is 3297905861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1685097923 - 2³⁰ = 611356099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1685097943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7456073 + ... + 7456298.

It is an arithmetic number, because the mean of its divisors is an integer number (425002602).

Almost surely, 2^1685097923 is an apocalyptic number.

1685097923 is a deficient number, since it is larger than the sum of its proper divisors (14912485).

1685097923 is a wasteful number, since it uses less digits than its factorization.

1685097923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14912484.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1685097923 is about 41049.9442508757. The cubic root of 1685097923 is about 1189.9856230168.

The spelling of 1685097923 in words is "one billion, six hundred eighty-five million, ninety-seven thousand, nine hundred twenty-three".