168357871819 has 8 divisors (see below), whose sum is σ = 170992908800. Its totient is φ = 165726430056.

The previous prime is 168357871817. The next prime is 168357871901. The reversal of 168357871819 is 918178753861.

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 168357871819 - 2¹ = 168357871817 is a prime.

It is a super-2 number, since 2×168357871819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168357871817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804339 + ... + 991804.

It is an arithmetic number, because the mean of its divisors is an integer number (21374113600).

Almost surely, 2^168357871819 is an apocalyptic number.

168357871819 is a deficient number, since it is larger than the sum of its proper divisors (2635036981).

168357871819 is a wasteful number, since it uses less digits than its factorization.

168357871819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797609.

The product of its digits is 20321280, while the sum is 64.

The spelling of 168357871819 in words is "one hundred sixty-eight billion, three hundred fifty-seven million, eight hundred seventy-one thousand, eight hundred nineteen".