163111604 has 6 divisors (see below), whose sum is σ = 285445314. Its totient is φ = 81555800.

The previous prime is 163111591. The next prime is 163111609. The reversal of 163111604 is 406111361.

163111604 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 161544100 + 1567504 = 12710^2 + 1252^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163111604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163111609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20388947 + ... + 20388954.

It is an arithmetic number, because the mean of its divisors is an integer number (47574219).

Almost surely, 2^163111604 is an apocalyptic number.

It is an amenable number.

163111604 is a deficient number, since it is larger than the sum of its proper divisors (122333710).

163111604 is a wasteful number, since it uses less digits than its factorization.

163111604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40777905 (or 40777903 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 163111604 is about 12771.5153368737. The cubic root of 163111604 is about 546.3802000661.

Adding to 163111604 its reverse (406111361), we get a palindrome (569222965).

The spelling of 163111604 in words is "one hundred sixty-three million, one hundred eleven thousand, six hundred four".