161610258 has 8 divisors (see below), whose sum is σ = 323220528. Its totient is φ = 53870084.

The previous prime is 161610209. The next prime is 161610277. The reversal of 161610258 is 852016161.

161610258 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.

161610258 is an admirable number.

It is a super-2 number, since 2×161610258² = 52235750981653128, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13467516 + ... + 13467527.

It is an arithmetic number, because the mean of its divisors is an integer number (40402566).

Almost surely, 2^161610258 is an apocalyptic number.

161610258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161610258 is a wasteful number, since it uses less digits than its factorization.

161610258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26935048.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 161610258 is about 12712.6023299716. The cubic root of 161610258 is about 544.6986612363.

The spelling of 161610258 in words is "one hundred sixty-one million, six hundred ten thousand, two hundred fifty-eight".