166451332 has 6 divisors (see below), whose sum is σ = 291289838. Its totient is φ = 83225664.

The previous prime is 166451317. The next prime is 166451339. The reversal of 166451332 is 233154661.

166451332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 120428676 + 46022656 = 10974^2 + 6784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166451294 and 166451303.

It is not an unprimeable number, because it can be changed into a prime (166451339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20806413 + ... + 20806420.

Almost surely, 2^166451332 is an apocalyptic number.

It is an amenable number.

166451332 is a deficient number, since it is larger than the sum of its proper divisors (124838506).

166451332 is a wasteful number, since it uses less digits than its factorization.

166451332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41612837 (or 41612835 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 166451332 is about 12901.6019160413. The cubic root of 166451332 is about 550.0840995365.

The spelling of 166451332 in words is "one hundred sixty-six million, four hundred fifty-one thousand, three hundred thirty-two".