168858153193 has 2 divisors, whose sum is σ = 168858153194. Its totient is φ = 168858153192.

The previous prime is 168858153179. The next prime is 168858153241. The reversal of 168858153193 is 391351858861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95380292569 + 73477860624 = 308837^2 + 271068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168858153193 is a prime.

It is not a weakly prime, because it can be changed into another prime (168858153103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84429076596 + 84429076597.

It is an arithmetic number, because the mean of its divisors is an integer number (84429076597).

Almost surely, 2^168858153193 is an apocalyptic number.

It is an amenable number.

168858153193 is a deficient number, since it is larger than the sum of its proper divisors (1).

168858153193 is an equidigital number, since it uses as much as digits as its factorization.

168858153193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 58.

The spelling of 168858153193 in words is "one hundred sixty-eight billion, eight hundred fifty-eight million, one hundred fifty-three thousand, one hundred ninety-three".