163814121 has 6 divisors (see below), whose sum is σ = 236620410. Its totient is φ = 109209408.

The previous prime is 163814107. The next prime is 163814171. The reversal of 163814121 is 121418361.

It is a happy number.

163814121 is a `hidden beast` number, since 1 + 638 + 1 + 4 + 1 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 137804121 + 26010000 = 11739^2 + 5100^2 .

It is not a de Polignac number, because 163814121 - 2⁵ = 163814089 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (163814171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9100776 + ... + 9100793.

It is an arithmetic number, because the mean of its divisors is an integer number (39436735).

Almost surely, 2^163814121 is an apocalyptic number.

It is an amenable number.

163814121 is a deficient number, since it is larger than the sum of its proper divisors (72806289).

163814121 is a wasteful number, since it uses less digits than its factorization.

163814121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18201575 (or 18201572 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 163814121 is about 12798.9890616408. The cubic root of 163814121 is about 547.1634912193.

It can be divided in two parts, 16381 and 4121, that added together give a palindrome (20502).

The spelling of 163814121 in words is "one hundred sixty-three million, eight hundred fourteen thousand, one hundred twenty-one".