166102278 has 16 divisors (see below), whose sum is σ = 342921216. Its totient is φ = 53581320.

The previous prime is 166102271. The next prime is 166102283. The reversal of 166102278 is 872201661.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166102271) 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, 446326 + ... + 446697.

It is an arithmetic number, because the mean of its divisors is an integer number (21432576).

Almost surely, 2^166102278 is an apocalyptic number.

166102278 is an abundant number, since it is smaller than the sum of its proper divisors (176818938).

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

166102278 is a wasteful number, since it uses less digits than its factorization.

166102278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893059.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 166102278 is about 12888.0672717052. The cubic root of 166102278 is about 549.6993155359.

The spelling of 166102278 in words is "one hundred sixty-six million, one hundred two thousand, two hundred seventy-eight".