168454370387 has 4 divisors (see below), whose sum is σ = 178363451016. Its totient is φ = 158545289760.

The previous prime is 168454370363. The next prime is 168454370389. The reversal of 168454370387 is 783073454861.

It is a happy number.

168454370387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783073454861 = 18301 ⋅42788561.

It is a cyclic number.

It is not a de Polignac number, because 168454370387 - 2²⁰ = 168453321811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168454370389) 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 3 ways as a sum of consecutive naturals, for example, 4954540289 + ... + 4954540322.

It is an arithmetic number, because the mean of its divisors is an integer number (44590862754).

Almost surely, 2^168454370387 is an apocalyptic number.

168454370387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

168454370387 is a deficient number, since it is larger than the sum of its proper divisors (9909080629).

168454370387 is an equidigital number, since it uses as much as digits as its factorization.

168454370387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909080628.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 168454370387 in words is "one hundred sixty-eight billion, four hundred fifty-four million, three hundred seventy thousand, three hundred eighty-seven".