161938798 has 8 divisors (see below), whose sum is σ = 277609392. Its totient is φ = 69402336.

The previous prime is 161938789. The next prime is 161938801. The reversal of 161938798 is 897839161.

It is a happy number.

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, 5783515 + ... + 5783542.

It is an arithmetic number, because the mean of its divisors is an integer number (34701174).

Almost surely, 2^161938798 is an apocalyptic number.

161938798 is a deficient number, since it is larger than the sum of its proper divisors (115670594).

161938798 is a wasteful number, since it uses less digits than its factorization.

161938798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11567066.

The product of its digits is 653184, while the sum is 52.

The square root of 161938798 is about 12725.5175926168. The cubic root of 161938798 is about 545.0675201815.

The spelling of 161938798 in words is "one hundred sixty-one million, nine hundred thirty-eight thousand, seven hundred ninety-eight".