1685001849993 has 72 divisors (see below), whose sum is σ = 3090585326400. Its totient is φ = 874776893760.

The previous prime is 1685001849983. The next prime is 1685001850027. The reversal of 1685001849993 is 3999481005861.

1685001849993 is a `hidden beast` number, since 1 + 6 + 8 + 50 + 0 + 1 + 8 + 499 + 93 = 666.

It is not a de Polignac number, because 1685001849993 - 2⁸ = 1685001849737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1685001849993.

It is not an unprimeable number, because it can be changed into a prime (1685001849983) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7687483 + ... + 7903631.

It is an arithmetic number, because the mean of its divisors is an integer number (42924796200).

Almost surely, 2^{1685001849993} is an apocalyptic number.

It is an amenable number.

1685001849993 is a deficient number, since it is larger than the sum of its proper divisors (1405583476407).

1685001849993 is a wasteful number, since it uses less digits than its factorization.

1685001849993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217787 (or 217777 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 1685001849993 in words is "one trillion, six hundred eighty-five billion, one million, eight hundred forty-nine thousand, nine hundred ninety-three".