938196166 has 4 divisors (see below), whose sum is σ = 1407294252. Its totient is φ = 469098082.

The previous prime is 938196163. The next prime is 938196209. The reversal of 938196166 is 661691839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661691839 = 331 ⋅1999069.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938196163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234549040 + ... + 234549043.

It is an arithmetic number, because the mean of its divisors is an integer number (351823563).

Almost surely, 2^938196166 is an apocalyptic number.

938196166 is a deficient number, since it is larger than the sum of its proper divisors (469098086).

938196166 is a wasteful number, since it uses less digits than its factorization.

938196166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469098085.

The product of its digits is 419904, while the sum is 49.

The square root of 938196166 is about 30629.9880182804. The cubic root of 938196166 is about 978.9591079294.

The spelling of 938196166 in words is "nine hundred thirty-eight million, one hundred ninety-six thousand, one hundred sixty-six".