166230513 has 6 divisors (see below), whose sum is σ = 240110754. Its totient is φ = 110820336.

The previous prime is 166230503. The next prime is 166230527. The reversal of 166230513 is 315032661.

It can be written as a sum of positive squares in only one way, i.e., 154554624 + 11675889 = 12432^2 + 3417^2 .

It is not a de Polignac number, because 166230513 - 2⁵ = 166230481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166230503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9235020 + ... + 9235037.

It is an arithmetic number, because the mean of its divisors is an integer number (40018459).

Almost surely, 2^166230513 is an apocalyptic number.

It is an amenable number.

166230513 is a deficient number, since it is larger than the sum of its proper divisors (73880241).

166230513 is a wasteful number, since it uses less digits than its factorization.

166230513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18470063 (or 18470060 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 166230513 is about 12893.0412626347. The cubic root of 166230513 is about 549.8407395632.

The spelling of 166230513 in words is "one hundred sixty-six million, two hundred thirty thousand, five hundred thirteen".