102161830 has 16 divisors (see below), whose sum is σ = 184910544. Its totient is φ = 40638240.

The previous prime is 102161827. The next prime is 102161861. The reversal of 102161830 is 38161201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26412 + ... + 30031.

It is an arithmetic number, because the mean of its divisors is an integer number (11556909).

Almost surely, 2^102161830 is an apocalyptic number.

102161830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102161830 is a deficient number, since it is larger than the sum of its proper divisors (82748714).

102161830 is a wasteful number, since it uses less digits than its factorization.

102161830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56631.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 102161830 is about 10107.5135419152. The cubic root of 102161830 is about 467.4798412767.

The spelling of 102161830 in words is "one hundred two million, one hundred sixty-one thousand, eight hundred thirty".