161858914 has 16 divisors (see below), whose sum is σ = 278510400. Its totient is φ = 69108624.

The previous prime is 161858909. The next prime is 161858927. The reversal of 161858914 is 419858161.

161858914 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 17724 + ... + 25255.

It is an arithmetic number, because the mean of its divisors is an integer number (17406900).

Almost surely, 2^161858914 is an apocalyptic number.

161858914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161858914 is a deficient number, since it is larger than the sum of its proper divisors (116651486).

161858914 is a wasteful number, since it uses less digits than its factorization.

161858914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43257.

The product of its digits is 69120, while the sum is 43.

The square root of 161858914 is about 12722.3784725970. The cubic root of 161858914 is about 544.9778786296.

The spelling of 161858914 in words is "one hundred sixty-one million, eight hundred fifty-eight thousand, nine hundred fourteen".