166643134 has 16 divisors (see below), whose sum is σ = 288204768. Its totient is φ = 70785792.

The previous prime is 166643131. The next prime is 166643149. The reversal of 166643134 is 431346661.

It is a self number, because there is not a number n which added to its sum of digits gives 166643134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166643131) 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, 51087 + ... + 54250.

It is an arithmetic number, because the mean of its divisors is an integer number (18012798).

Almost surely, 2^166643134 is an apocalyptic number.

166643134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166643134 is a deficient number, since it is larger than the sum of its proper divisors (121561634).

166643134 is a wasteful number, since it uses less digits than its factorization.

166643134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105459.

The product of its digits is 31104, while the sum is 34.

The square root of 166643134 is about 12909.0330389228. The cubic root of 166643134 is about 550.2953058789.

Adding to 166643134 its reverse (431346661), we get a palindrome (597989795).

The spelling of 166643134 in words is "one hundred sixty-six million, six hundred forty-three thousand, one hundred thirty-four".