164040133 has 4 divisors (see below), whose sum is σ = 164462220. Its totient is φ = 163618048.

The previous prime is 164040131. The next prime is 164040143. The reversal of 164040133 is 331040461.

164040133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97160449 + 66879684 = 9857^2 + 8178^2 .

It is a cyclic number.

It is not a de Polignac number, because 164040133 - 2¹ = 164040131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164040131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210460 + ... + 211237.

It is an arithmetic number, because the mean of its divisors is an integer number (41115555).

Almost surely, 2^164040133 is an apocalyptic number.

It is an amenable number.

164040133 is a deficient number, since it is larger than the sum of its proper divisors (422087).

164040133 is an equidigital number, since it uses as much as digits as its factorization.

164040133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422086.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 164040133 is about 12807.8153094117. The cubic root of 164040133 is about 547.4150134621.

Adding to 164040133 its reverse (331040461), we get a palindrome (495080594).

The spelling of 164040133 in words is "one hundred sixty-four million, forty thousand, one hundred thirty-three".