1685804938 has 16 divisors (see below), whose sum is σ = 2613146976. Its totient is φ = 815144400.

The previous prime is 1685804933. The next prime is 1685804951. The reversal of 1685804938 is 8394085861.

It is not an unprimeable number, because it can be changed into a prime (1685804933) 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 7 ways as a sum of consecutive naturals, for example, 88356 + ... + 105727.

It is an arithmetic number, because the mean of its divisors is an integer number (163321686).

Almost surely, 2^1685804938 is an apocalyptic number.

1685804938 is a deficient number, since it is larger than the sum of its proper divisors (927342038).

1685804938 is a wasteful number, since it uses less digits than its factorization.

1685804938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194229.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 1685804938 is about 41058.5549916214. The cubic root of 1685804938 is about 1190.1520268075.

The spelling of 1685804938 in words is "one billion, six hundred eighty-five million, eight hundred four thousand, nine hundred thirty-eight".