168381690619 has 2 divisors, whose sum is σ = 168381690620. Its totient is φ = 168381690618.

The previous prime is 168381690557. The next prime is 168381690637. The reversal of 168381690619 is 916096183861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168381690619 - 2¹⁷ = 168381559547 is a prime.

It is a super-2 number, since 2×168381690619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (168381690119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84190845309 + 84190845310.

It is an arithmetic number, because the mean of its divisors is an integer number (84190845310).

Almost surely, 2^168381690619 is an apocalyptic number.

168381690619 is a deficient number, since it is larger than the sum of its proper divisors (1).

168381690619 is an equidigital number, since it uses as much as digits as its factorization.

168381690619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 168381690619 in words is "one hundred sixty-eight billion, three hundred eighty-one million, six hundred ninety thousand, six hundred nineteen".