118170545 has 4 divisors (see below), whose sum is σ = 141804660. Its totient is φ = 94536432.

The previous prime is 118170539. The next prime is 118170571. The reversal of 118170545 is 545071811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45050944 + 73119601 = 6712^2 + 8551^2 .

It is a cyclic number.

It is not a de Polignac number, because 118170545 - 2¹⁰ = 118169521 is a prime.

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, 11817050 + ... + 11817059.

It is an arithmetic number, because the mean of its divisors is an integer number (35451165).

Almost surely, 2^118170545 is an apocalyptic number.

It is an amenable number.

118170545 is a deficient number, since it is larger than the sum of its proper divisors (23634115).

118170545 is an equidigital number, since it uses as much as digits as its factorization.

118170545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23634114.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 118170545 is about 10870.6276267748. The cubic root of 118170545 is about 490.7229990455.

The spelling of 118170545 in words is "one hundred eighteen million, one hundred seventy thousand, five hundred forty-five".