168811383 has 8 divisors (see below), whose sum is σ = 242395888. Its totient is φ = 103883904.

The previous prime is 168811369. The next prime is 168811393. The reversal of 168811383 is 383118861.

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

It is not a de Polignac number, because 168811383 - 2⁵ = 168811351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4328497 = 168811383 / (1 + 6 + 8 + 8 + 1 + 1 + 3 + 8 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168811393) 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, 2164210 + ... + 2164287.

It is an arithmetic number, because the mean of its divisors is an integer number (30299486).

Almost surely, 2^168811383 is an apocalyptic number.

168811383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

168811383 is a deficient number, since it is larger than the sum of its proper divisors (73584505).

168811383 is a wasteful number, since it uses less digits than its factorization.

168811383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328513.

The product of its digits is 27648, while the sum is 39.

The square root of 168811383 is about 12992.7434747247. The cubic root of 168811383 is about 552.6717202010.

The spelling of 168811383 in words is "one hundred sixty-eight million, eight hundred eleven thousand, three hundred eighty-three".