166440452 has 24 divisors (see below), whose sum is σ = 296856000. Its totient is φ = 81632160.

The previous prime is 166440451. The next prime is 166440499. The reversal of 166440452 is 254044661.

166440452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166440451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121073 + ... + 122439.

It is an arithmetic number, because the mean of its divisors is an integer number (12369000).

Almost surely, 2^166440452 is an apocalyptic number.

It is an amenable number.

166440452 is a deficient number, since it is larger than the sum of its proper divisors (130415548).

166440452 is a wasteful number, since it uses less digits than its factorization.

166440452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 166440452 is about 12901.1802560851. The cubic root of 166440452 is about 550.0721139602.

The spelling of 166440452 in words is "one hundred sixty-six million, four hundred forty thousand, four hundred fifty-two".