168940038 has 8 divisors (see below), whose sum is σ = 337880088. Its totient is φ = 56313344.

The previous prime is 168940003. The next prime is 168940061. The reversal of 168940038 is 830049861.

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

168940038 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 168939978 and 168940005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14078331 + ... + 14078342.

It is an arithmetic number, because the mean of its divisors is an integer number (42235011).

Almost surely, 2^168940038 is an apocalyptic number.

168940038 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

168940038 is a wasteful number, since it uses less digits than its factorization.

168940038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28156678.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 168940038 is about 12997.6935646291. The cubic root of 168940038 is about 552.8120857839.

Adding to 168940038 its reverse (830049861), we get a palindrome (998989899).

The spelling of 168940038 in words is "one hundred sixty-eight million, nine hundred forty thousand, thirty-eight".