163800190 has 16 divisors (see below), whose sum is σ = 296166528. Its totient is φ = 65225376.

The previous prime is 163800163. The next prime is 163800191. The reversal of 163800190 is 91008361.

It is a happy number.

It is a super-2 number, since 2×163800190² = 53661004488072200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163800191) 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, 34497 + ... + 38956.

It is an arithmetic number, because the mean of its divisors is an integer number (18510408).

Almost surely, 2^163800190 is an apocalyptic number.

163800190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163800190 is a deficient number, since it is larger than the sum of its proper divisors (132366338).

163800190 is a wasteful number, since it uses less digits than its factorization.

163800190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73683.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 163800190 is about 12798.4448273999. Note that the first 3 decimals coincide. The cubic root of 163800190 is about 547.1479802433.

The spelling of 163800190 in words is "one hundred sixty-three million, eight hundred thousand, one hundred ninety".