1685540214 has 24 divisors (see below), whose sum is σ = 3653133120. Its totient is φ = 561673008.

The previous prime is 1685540183. The next prime is 1685540231. The reversal of 1685540214 is 4120455861.

It is a happy number.

1685540214 is a `hidden beast` number, since 16 + 85 + 540 + 21 + 4 = 666.

It is a super-2 number, since 2×1685540214² = 5682091626022331592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54139 + ... + 79385.

It is an arithmetic number, because the mean of its divisors is an integer number (152213880).

Almost surely, 2^1685540214 is an apocalyptic number.

1685540214 is an abundant number, since it is smaller than the sum of its proper divisors (1967592906).

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

1685540214 is a wasteful number, since it uses less digits than its factorization.

1685540214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28964 (or 28961 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 1685540214 is about 41055.3311276380. The cubic root of 1685540214 is about 1190.0897265395.

The spelling of 1685540214 in words is "one billion, six hundred eighty-five million, five hundred forty thousand, two hundred fourteen".