1685149692 has 24 divisors (see below), whose sum is σ = 4027919952. Its totient is φ = 548016000.

The previous prime is 1685149657. The next prime is 1685149699. The reversal of 1685149692 is 2969415861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685149699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712059 + ... + 1713042.

It is an arithmetic number, because the mean of its divisors is an integer number (167829998).

Almost surely, 2^1685149692 is an apocalyptic number.

1685149692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1685149692 is an abundant number, since it is smaller than the sum of its proper divisors (2342770260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685149692 is a wasteful number, since it uses less digits than its factorization.

1685149692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425149 (or 3425147 counting only the distinct ones).

The product of its digits is 933120, while the sum is 51.

The square root of 1685149692 is about 41050.5748071814. The cubic root of 1685149692 is about 1189.9978090019.

The spelling of 1685149692 in words is "one billion, six hundred eighty-five million, one hundred forty-nine thousand, six hundred ninety-two".