168338819 has 8 divisors (see below), whose sum is σ = 187550208. Its totient is φ = 149778760.

The previous prime is 168338813. The next prime is 168338843. The reversal of 168338819 is 918833861.

It is a happy number.

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 168338819 - 2⁸ = 168338563 is a prime.

It is a super-2 number, since 2×168338819² = 56675915964629522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168338813) 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, 162287 + ... + 163320.

It is an arithmetic number, because the mean of its divisors is an integer number (23443776).

Almost surely, 2^168338819 is an apocalyptic number.

168338819 is a deficient number, since it is larger than the sum of its proper divisors (19211389).

168338819 is a wasteful number, since it uses less digits than its factorization.

168338819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325665.

The product of its digits is 248832, while the sum is 47.

The square root of 168338819 is about 12974.5450401931. The cubic root of 168338819 is about 552.1555290148.

It can be divided in two parts, 16833 and 8819, that added together give a palindrome (25652).

The spelling of 168338819 in words is "one hundred sixty-eight million, three hundred thirty-eight thousand, eight hundred nineteen".