166078103 has 4 divisors (see below), whose sum is σ = 168079128. Its totient is φ = 164077080.

The previous prime is 166078093. The next prime is 166078109. The reversal of 166078103 is 301870661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166078103 - 2⁶ = 166078039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166078103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166078109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000388 + ... + 1000553.

It is an arithmetic number, because the mean of its divisors is an integer number (42019782).

Almost surely, 2^166078103 is an apocalyptic number.

166078103 is a deficient number, since it is larger than the sum of its proper divisors (2001025).

166078103 is an equidigital number, since it uses as much as digits as its factorization.

166078103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001024.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 166078103 is about 12887.1293545149. The cubic root of 166078103 is about 549.6726459724.

The spelling of 166078103 in words is "one hundred sixty-six million, seventy-eight thousand, one hundred three".