163641830 has 32 divisors (see below), whose sum is σ = 340238880. Its totient is φ = 56005120.

The previous prime is 163641817. The next prime is 163641853. The reversal of 163641830 is 38146361.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41885 + ... + 45624.

It is an arithmetic number, because the mean of its divisors is an integer number (10632465).

Almost surely, 2^163641830 is an apocalyptic number.

163641830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163641830 is an abundant number, since it is smaller than the sum of its proper divisors (176597050).

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

163641830 is a wasteful number, since it uses less digits than its factorization.

163641830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87544.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 163641830 is about 12792.2566422035. The cubic root of 163641830 is about 546.9715980873.

The spelling of 163641830 in words is "one hundred sixty-three million, six hundred forty-one thousand, eight hundred thirty".