166145245 has 16 divisors (see below), whose sum is σ = 228094848. Its totient is φ = 113808960.

The previous prime is 166145191. The next prime is 166145279. The reversal of 166145245 is 542541661.

It is a de Polignac number, because none of the positive numbers 2^k-166145245 is a prime.

It is a super-2 number, since 2×166145245² = 55208484872220050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166145245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43347 + ... + 47023.

It is an arithmetic number, because the mean of its divisors is an integer number (14255928).

Almost surely, 2^166145245 is an apocalyptic number.

It is an amenable number.

166145245 is a deficient number, since it is larger than the sum of its proper divisors (61949603).

166145245 is a wasteful number, since it uses less digits than its factorization.

166145245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980.

The product of its digits is 28800, while the sum is 34.

The square root of 166145245 is about 12889.7340934559. The cubic root of 166145245 is about 549.7467098171.

The spelling of 166145245 in words is "one hundred sixty-six million, one hundred forty-five thousand, two hundred forty-five".