161900268 has 12 divisors (see below), whose sum is σ = 377767320. Its totient is φ = 53966752.

The previous prime is 161900261. The next prime is 161900281. The reversal of 161900268 is 862009161.

161900268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (161900261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6745833 + ... + 6745856.

It is an arithmetic number, because the mean of its divisors is an integer number (31480610).

Almost surely, 2^161900268 is an apocalyptic number.

It is an amenable number.

161900268 is an abundant number, since it is smaller than the sum of its proper divisors (215867052).

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

161900268 is a wasteful number, since it uses less digits than its factorization.

161900268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13491696 (or 13491694 counting only the distinct ones).

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

The square root of 161900268 is about 12724.0036152148. The cubic root of 161900268 is about 545.0242875578.

The spelling of 161900268 in words is "one hundred sixty-one million, nine hundred thousand, two hundred sixty-eight".