168192738 has 96 divisors (see below), whose sum is σ = 430210560. Its totient is φ = 46500480.

The previous prime is 168192671. The next prime is 168192749. The reversal of 168192738 is 837291861.

Its product of digits (145152) is a multiple of the sum of its prime factors (432).

It is a junction number, because it is equal to n+sod(n) for n = 168192693 and 168192702.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 607056 + ... + 607332.

It is an arithmetic number, because the mean of its divisors is an integer number (4481360).

Almost surely, 2^168192738 is an apocalyptic number.

168192738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168192738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215105280).

168192738 is an abundant number, since it is smaller than the sum of its proper divisors (262017822).

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

168192738 is a wasteful number, since it uses less digits than its factorization.

168192738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 429 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 168192738 is about 12968.9142953448. The cubic root of 168192738 is about 551.9957663506.

The spelling of 168192738 in words is "one hundred sixty-eight million, one hundred ninety-two thousand, seven hundred thirty-eight".