168238998 has 16 divisors (see below), whose sum is σ = 373864560. Its totient is φ = 56079648.

The previous prime is 168238981. The next prime is 168239003. The reversal of 168238998 is 899832861.

It is a happy number.

168238998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 3115537 = 168238998 / (1 + 6 + 8 + 2 + 3 + 8 + 9 + 9 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557715 + ... + 1557822.

It is an arithmetic number, because the mean of its divisors is an integer number (23366535).

Almost surely, 2^168238998 is an apocalyptic number.

168238998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168238998 is an abundant number, since it is smaller than the sum of its proper divisors (205625562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168238998 is a wasteful number, since it uses less digits than its factorization.

168238998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115548 (or 3115542 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 168238998 is about 12970.6976682058. The cubic root of 168238998 is about 552.0463689782.

The spelling of 168238998 in words is "one hundred sixty-eight million, two hundred thirty-eight thousand, nine hundred ninety-eight".