163847490 has 32 divisors (see below), whose sum is σ = 393823296. Its totient is φ = 43627200.

The previous prime is 163847483. The next prime is 163847503. The reversal of 163847490 is 94748361.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18265 + ... + 25715.

It is an arithmetic number, because the mean of its divisors is an integer number (12306978).

Almost surely, 2^163847490 is an apocalyptic number.

163847490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163847490 is an abundant number, since it is smaller than the sum of its proper divisors (229975806).

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

163847490 is a wasteful number, since it uses less digits than its factorization.

163847490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8194.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 163847490 is about 12800.2925747812. The cubic root of 163847490 is about 547.2006411688.

The spelling of 163847490 in words is "one hundred sixty-three million, eight hundred forty-seven thousand, four hundred ninety".