161777230 has 8 divisors (see below), whose sum is σ = 291199032. Its totient is φ = 64710888.

The previous prime is 161777221. The next prime is 161777237. The reversal of 161777230 is 32777161.

161777230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161777237) 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, 8088852 + ... + 8088871.

It is an arithmetic number, because the mean of its divisors is an integer number (36399879).

Almost surely, 2^161777230 is an apocalyptic number.

161777230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161777230 is a deficient number, since it is larger than the sum of its proper divisors (129421802).

161777230 is a wasteful number, since it uses less digits than its factorization.

161777230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16177730.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 161777230 is about 12719.1678186900. The cubic root of 161777230 is about 544.8861867099.

The spelling of 161777230 in words is "one hundred sixty-one million, seven hundred seventy-seven thousand, two hundred thirty".