168405955 has 8 divisors (see below), whose sum is σ = 202277952. Its totient is φ = 134597568.

The previous prime is 168405953. The next prime is 168405967. The reversal of 168405955 is 559504861.

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

It is a cyclic number.

It is not a de Polignac number, because 168405955 - 2¹ = 168405953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168405953) by changing a digit.

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, 9867 + ... + 20836.

It is an arithmetic number, because the mean of its divisors is an integer number (25284744).

Almost surely, 2^168405955 is an apocalyptic number.

168405955 is a deficient number, since it is larger than the sum of its proper divisors (33871997).

168405955 is a wasteful number, since it uses less digits than its factorization.

168405955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31805.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 168405955 is about 12977.1320021028. The cubic root of 168405955 is about 552.2289218443.

The spelling of 168405955 in words is "one hundred sixty-eight million, four hundred five thousand, nine hundred fifty-five".