133920163 has 12 divisors (see below), whose sum is σ = 145463040. Its totient is φ = 123236256.

The previous prime is 133920161. The next prime is 133920167. The reversal of 133920163 is 361029331.

It is not a de Polignac number, because 133920163 - 2¹ = 133920161 is a prime.

It is a super-2 number, since 2×133920163² = 35869220115893138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133920161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63693 + ... + 65761.

It is an arithmetic number, because the mean of its divisors is an integer number (12121920).

Almost surely, 2^133920163 is an apocalyptic number.

133920163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

133920163 is a deficient number, since it is larger than the sum of its proper divisors (11542877).

133920163 is a wasteful number, since it uses less digits than its factorization.

133920163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 133920163 is about 11572.3879558197. The cubic root of 133920163 is about 511.6213465691.

Adding to 133920163 its reverse (361029331), we get a palindrome (494949494).

The spelling of 133920163 in words is "one hundred thirty-three million, nine hundred twenty thousand, one hundred sixty-three".