161196144 has 40 divisors (see below), whose sum is σ = 434531712. Its totient is φ = 51395520.

The previous prime is 161196143. The next prime is 161196149. The reversal of 161196144 is 441691161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161196143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71902 + ... + 74109.

Almost surely, 2^161196144 is an apocalyptic number.

It is an amenable number.

161196144 is an abundant number, since it is smaller than the sum of its proper divisors (273335568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161196144 is a wasteful number, since it uses less digits than its factorization.

161196144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146045 (or 146039 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 161196144 is about 12696.3043441783. The cubic root of 161196144 is about 544.2330136441.

The spelling of 161196144 in words is "one hundred sixty-one million, one hundred ninety-six thousand, one hundred forty-four".