161203996 has 12 divisors (see below), whose sum is σ = 298701648. Its totient is φ = 75860672.

The previous prime is 161203981. The next prime is 161204027. The reversal of 161203996 is 699302161.

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, 1185256 + ... + 1185391.

It is an arithmetic number, because the mean of its divisors is an integer number (24891804).

Almost surely, 2^161203996 is an apocalyptic number.

It is an amenable number.

161203996 is a deficient number, since it is larger than the sum of its proper divisors (137497652).

161203996 is a wasteful number, since it uses less digits than its factorization.

161203996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370668 (or 2370666 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 161203996 is about 12696.6135642541. The cubic root of 161203996 is about 544.2418501835.

The spelling of 161203996 in words is "one hundred sixty-one million, two hundred three thousand, nine hundred ninety-six".