164238733 has 2 divisors, whose sum is σ = 164238734. Its totient is φ = 164238732.

The previous prime is 164238721. The next prime is 164238817. The reversal of 164238733 is 337832461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143472484 + 20766249 = 11978^2 + 4557^2 .

It is a cyclic number.

It is not a de Polignac number, because 164238733 - 2¹³ = 164230541 is a prime.

It is a super-2 number, since 2×164238733² = 53948722834890578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164238692 and 164238701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164238233) 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 as a sum of consecutive naturals, namely, 82119366 + 82119367.

It is an arithmetic number, because the mean of its divisors is an integer number (82119367).

Almost surely, 2^164238733 is an apocalyptic number.

It is an amenable number.

164238733 is a deficient number, since it is larger than the sum of its proper divisors (1).

164238733 is an equidigital number, since it uses as much as digits as its factorization.

164238733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 164238733 is about 12815.5660429027. The cubic root of 164238733 is about 547.6358390522.

The spelling of 164238733 in words is "one hundred sixty-four million, two hundred thirty-eight thousand, seven hundred thirty-three".