161103188 has 12 divisors (see below), whose sum is σ = 282279732. Its totient is φ = 80451840.

The previous prime is 161103179. The next prime is 161103197. The reversal of 161103188 is 881301161.

161103188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161103179) and next prime (161103197).

It can be written as a sum of positive squares in 2 ways, for example, as 88887184 + 72216004 = 9428^2 + 8498^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161103188.

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, 21245 + ... + 27812.

It is an arithmetic number, because the mean of its divisors is an integer number (23523311).

Almost surely, 2^161103188 is an apocalyptic number.

It is an amenable number.

161103188 is a deficient number, since it is larger than the sum of its proper divisors (121176544).

161103188 is a wasteful number, since it uses less digits than its factorization.

161103188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49882 (or 49880 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 161103188 is about 12692.6430659654. The cubic root of 161103188 is about 544.1283803481.

The spelling of 161103188 in words is "one hundred sixty-one million, one hundred three thousand, one hundred eighty-eight".