163901755 has 8 divisors (see below), whose sum is σ = 198231552. Its totient is φ = 130088448.

The previous prime is 163901741. The next prime is 163901789. The reversal of 163901755 is 557109361.

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 163901755 - 2⁷ = 163901627 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128422 + ... + 129691.

It is an arithmetic number, because the mean of its divisors is an integer number (24778944).

Almost surely, 2^163901755 is an apocalyptic number.

163901755 is a deficient number, since it is larger than the sum of its proper divisors (34329797).

163901755 is a wasteful number, since it uses less digits than its factorization.

163901755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258245.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 163901755 is about 12802.4120774173. The cubic root of 163901755 is about 547.2610440171.

It can be divided in two parts, 16390 and 1755, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 163901755 in words is "one hundred sixty-three million, nine hundred one thousand, seven hundred fifty-five".