1685373970 has 32 divisors (see below), whose sum is σ = 3468469248. Its totient is φ = 577606848.

The previous prime is 1685373959. The next prime is 1685373979. The reversal of 1685373970 is 793735861.

It is not an unprimeable number, because it can be changed into a prime (1685373979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328767 + ... + 333853.

It is an arithmetic number, because the mean of its divisors is an integer number (108389664).

Almost surely, 2^1685373970 is an apocalyptic number.

1685373970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1685373970 is an abundant number, since it is smaller than the sum of its proper divisors (1783095278).

1685373970 is a wasteful number, since it uses less digits than its factorization.

1685373970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 1685373970 is about 41053.3064441830. The cubic root of 1685373970 is about 1190.0505992655.

The spelling of 1685373970 in words is "one billion, six hundred eighty-five million, three hundred seventy-three thousand, nine hundred seventy".