161201388 has 24 divisors (see below), whose sum is σ = 392491008. Its totient is φ = 51397456.

The previous prime is 161201371. The next prime is 161201389. The reversal of 161201388 is 883102161.

It is not an unprimeable number, because it can be changed into a prime (161201389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291756 + ... + 292307.

It is an arithmetic number, because the mean of its divisors is an integer number (16353792).

Almost surely, 2^161201388 is an apocalyptic number.

It is an amenable number.

161201388 is an abundant number, since it is smaller than the sum of its proper divisors (231289620).

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

161201388 is a wasteful number, since it uses less digits than its factorization.

161201388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584093 (or 584091 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 161201388 is about 12696.5108592873. The cubic root of 161201388 is about 544.2389152058.

The spelling of 161201388 in words is "one hundred sixty-one million, two hundred one thousand, three hundred eighty-eight".