178397489338 has 8 divisors (see below), whose sum is σ = 267637734720. Its totient is φ = 89184911100.

The previous prime is 178397489329. The next prime is 178397489353. The reversal of 178397489338 is 833984793871.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6900658 + ... + 6926461.

It is an arithmetic number, because the mean of its divisors is an integer number (33454716840).

Almost surely, 2^178397489338 is an apocalyptic number.

178397489338 is a deficient number, since it is larger than the sum of its proper divisors (89240245382).

178397489338 is a wasteful number, since it uses less digits than its factorization.

178397489338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13833572.

The product of its digits is 219469824, while the sum is 70.

The spelling of 178397489338 in words is "one hundred seventy-eight billion, three hundred ninety-seven million, four hundred eighty-nine thousand, three hundred thirty-eight".