166893642 has 32 divisors (see below), whose sum is σ = 371309760. Its totient is φ = 55566000.

The previous prime is 166893599. The next prime is 166893647. The reversal of 166893642 is 246398661.

It is not an unprimeable number, because it can be changed into a prime (166893647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73017 + ... + 75267.

It is an arithmetic number, because the mean of its divisors is an integer number (11603430).

Almost surely, 2^166893642 is an apocalyptic number.

166893642 is an abundant number, since it is smaller than the sum of its proper divisors (204416118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166893642 is a wasteful number, since it uses less digits than its factorization.

166893642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635 (or 3629 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 166893642 is about 12918.7322133404. The cubic root of 166893642 is about 550.5709135088.

The spelling of 166893642 in words is "one hundred sixty-six million, eight hundred ninety-three thousand, six hundred forty-two".