161308858 has 8 divisors (see below), whose sum is σ = 242742240. Its totient is φ = 80394780.

The previous prime is 161308783. The next prime is 161308907. The reversal of 161308858 is 858803161.

161308858 is digitally balanced in base 2, 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 self number, because there is not a number n which added to its sum of digits gives 161308858.

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, 129048 + ... + 130291.

It is an arithmetic number, because the mean of its divisors is an integer number (30342780).

Almost surely, 2^161308858 is an apocalyptic number.

161308858 is a deficient number, since it is larger than the sum of its proper divisors (81433382).

161308858 is a wasteful number, since it uses less digits than its factorization.

161308858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259652.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 161308858 is about 12700.7424192446. The cubic root of 161308858 is about 544.3598330296.

The spelling of 161308858 in words is "one hundred sixty-one million, three hundred eight thousand, eight hundred fifty-eight".