168298389 has 18 divisors (see below), whose sum is σ = 282787830. Its totient is φ = 96170256.

The previous prime is 168298387. The next prime is 168298393. The reversal of 168298389 is 983892861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 157703364 + 10595025 = 12558^2 + 3255^2 .

It is not a de Polignac number, because 168298389 - 2¹ = 168298387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168298381) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 190374 + ... + 191255.

It is an arithmetic number, because the mean of its divisors is an integer number (15710435).

Almost surely, 2^168298389 is an apocalyptic number.

It is an amenable number.

168298389 is a deficient number, since it is larger than the sum of its proper divisors (114489441).

168298389 is a wasteful number, since it uses less digits than its factorization.

168298389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381649 (or 381639 counting only the distinct ones).

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

The square root of 168298389 is about 12972.9868958540. The cubic root of 168298389 is about 552.1113216724. Note that the first 3 decimals are identical.

The spelling of 168298389 in words is "one hundred sixty-eight million, two hundred ninety-eight thousand, three hundred eighty-nine".