163641842 has 32 divisors (see below), whose sum is σ = 304359552. Its totient is φ = 64255104.

The previous prime is 163641817. The next prime is 163641853. The reversal of 163641842 is 248146361.

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, 21653 + ... + 28215.

It is an arithmetic number, because the mean of its divisors is an integer number (9511236).

Almost surely, 2^163641842 is an apocalyptic number.

163641842 is a deficient number, since it is larger than the sum of its proper divisors (140717710).

163641842 is a wasteful number, since it uses less digits than its factorization.

163641842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722.

The product of its digits is 27648, while the sum is 35.

The square root of 163641842 is about 12792.2571112373. The cubic root of 163641842 is about 546.9716114572.

The spelling of 163641842 in words is "one hundred sixty-three million, six hundred forty-one thousand, eight hundred forty-two".