102166903 has 4 divisors (see below), whose sum is σ = 102187120. Its totient is φ = 102146688.

The previous prime is 102166859. The next prime is 102166907. The reversal of 102166903 is 309661201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 309661201 = 31 ⋅9989071.

It is a cyclic number.

It is not a de Polignac number, because 102166903 - 2²⁵ = 68612471 is a prime.

It is a super-2 number, since 2×102166903² = 20876152137222818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102166907) 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, 4951 + ... + 15127.

It is an arithmetic number, because the mean of its divisors is an integer number (25546780).

Almost surely, 2^102166903 is an apocalyptic number.

102166903 is a deficient number, since it is larger than the sum of its proper divisors (20217).

102166903 is a wasteful number, since it uses less digits than its factorization.

102166903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20216.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 102166903 is about 10107.7644907269. The cubic root of 102166903 is about 467.4875789545.

The spelling of 102166903 in words is "one hundred two million, one hundred sixty-six thousand, nine hundred three".