166036445 has 4 divisors (see below), whose sum is σ = 199243740. Its totient is φ = 132829152.

The previous prime is 166036441. The next prime is 166036447. The reversal of 166036445 is 544630661.

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 44970436 + 121066009 = 6706^2 + 11003^2 .

It is a cyclic number.

It is not a de Polignac number, because 166036445 - 2² = 166036441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166036441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16603640 + ... + 16603649.

It is an arithmetic number, because the mean of its divisors is an integer number (49810935).

Almost surely, 2^166036445 is an apocalyptic number.

It is an amenable number.

166036445 is a deficient number, since it is larger than the sum of its proper divisors (33207295).

166036445 is an equidigital number, since it uses as much as digits as its factorization.

166036445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33207294.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 166036445 is about 12885.5129894002. The cubic root of 166036445 is about 549.6266833049.

The spelling of 166036445 in words is "one hundred sixty-six million, thirty-six thousand, four hundred forty-five".