163654121 has 8 divisors (see below), whose sum is σ = 173560320. Its totient is φ = 153779008.

The previous prime is 163654111. The next prime is 163654129. The reversal of 163654121 is 121456361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163654121 - 2¹⁰ = 163653097 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163654129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3560 + ... + 18438.

It is an arithmetic number, because the mean of its divisors is an integer number (21695040).

Almost surely, 2^163654121 is an apocalyptic number.

It is an amenable number.

163654121 is a deficient number, since it is larger than the sum of its proper divisors (9906199).

163654121 is a wasteful number, since it uses less digits than its factorization.

163654121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15543.

The product of its digits is 4320, while the sum is 29.

The square root of 163654121 is about 12792.7370409932. The cubic root of 163654121 is about 546.9852919364.

The spelling of 163654121 in words is "one hundred sixty-three million, six hundred fifty-four thousand, one hundred twenty-one".