166493433 has 4 divisors (see below), whose sum is σ = 221991248. Its totient is φ = 110995620.

The previous prime is 166493407. The next prime is 166493443. The reversal of 166493433 is 334394661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166493433 - 2⁵ = 166493401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166493391 and 166493400.

It is not an unprimeable number, because it can be changed into a prime (166493443) 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, 27748903 + ... + 27748908.

It is an arithmetic number, because the mean of its divisors is an integer number (55497812).

Almost surely, 2^166493433 is an apocalyptic number.

It is an amenable number.

166493433 is a deficient number, since it is larger than the sum of its proper divisors (55497815).

166493433 is an equidigital number, since it uses as much as digits as its factorization.

166493433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55497814.

The product of its digits is 139968, while the sum is 39.

The square root of 166493433 is about 12903.2334319736. The cubic root of 166493433 is about 550.1304737291.

The spelling of 166493433 in words is "one hundred sixty-six million, four hundred ninety-three thousand, four hundred thirty-three".