1684886213357 has 8 divisors (see below), whose sum is σ = 1689788011800. Its totient is φ = 1679984838720.

The previous prime is 1684886213347. The next prime is 1684886213369. The reversal of 1684886213357 is 7533126884861.

It can be written as a sum of positive squares in 4 ways, for example, as 489480737641 + 1195405475716 = 699629^2 + 1093346^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1684886213357 - 2¹² = 1684886209261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1684886213357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684886213347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8988563 + ... + 9174095.

It is an arithmetic number, because the mean of its divisors is an integer number (211223501475).

Almost surely, 2^{1684886213357} is an apocalyptic number.

It is an amenable number.

1684886213357 is a deficient number, since it is larger than the sum of its proper divisors (4901798443).

1684886213357 is a wasteful number, since it uses less digits than its factorization.

1684886213357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211903.

The product of its digits is 46448640, while the sum is 62.

The spelling of 1684886213357 in words is "one trillion, six hundred eighty-four billion, eight hundred eighty-six million, two hundred thirteen thousand, three hundred fifty-seven".