168992438 has 8 divisors (see below), whose sum is σ = 254354688. Its totient is φ = 84207544.

The previous prime is 168992419. The next prime is 168992443. The reversal of 168992438 is 834299861.

It is a happy number.

168992438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 143606 + ... + 144777.

It is an arithmetic number, because the mean of its divisors is an integer number (31794336).

Almost surely, 2^168992438 is an apocalyptic number.

168992438 is a deficient number, since it is larger than the sum of its proper divisors (85362250).

168992438 is a wasteful number, since it uses less digits than its factorization.

168992438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288678.

The product of its digits is 746496, while the sum is 50.

The square root of 168992438 is about 12999.7091505926. The cubic root of 168992438 is about 552.8692349737.

The spelling of 168992438 in words is "one hundred sixty-eight million, nine hundred ninety-two thousand, four hundred thirty-eight".