1685964984 has 64 divisors (see below), whose sum is σ = 4705050240. Its totient is φ = 499013760.

The previous prime is 1685964979. The next prime is 1685964989. The reversal of 1685964984 is 4894695861.

1685964984 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1685964979) and next prime (1685964989).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685964989) 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, 62907 + ... + 85610.

It is an arithmetic number, because the mean of its divisors is an integer number (73516410).

Almost surely, 2^1685964984 is an apocalyptic number.

It is an amenable number.

1685964984 is an abundant number, since it is smaller than the sum of its proper divisors (3019085256).

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

1685964984 is a wasteful number, since it uses less digits than its factorization.

1685964984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148580 (or 148576 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 1685964984 is about 41060.5039423532. The cubic root of 1685964984 is about 1190.1896889433.

It can be divided in two parts, 1685 and 964984, that added together give a palindrome (966669).

The spelling of 1685964984 in words is "one billion, six hundred eighty-five million, nine hundred sixty-four thousand, nine hundred eighty-four".