20164013 has 2 divisors, whose sum is σ = 20164014. Its totient is φ = 20164012.

The previous prime is 20164003. The next prime is 20164049. The reversal of 20164013 is 31046102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10510564 + 9653449 = 3242^2 + 3107^2 .

It is a cyclic number.

It is not a de Polignac number, because 20164013 - 2¹² = 20159917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20163982 and 20164000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20164003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082006 + 10082007.

It is an arithmetic number, because the mean of its divisors is an integer number (10082007).

Almost surely, 2^20164013 is an apocalyptic number.

It is an amenable number.

20164013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20164013 is an equidigital number, since it uses as much as digits as its factorization.

20164013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20164013 is about 4490.4357249603. The cubic root of 20164013 is about 272.1817421845.

The spelling of 20164013 in words is "twenty million, one hundred sixty-four thousand, thirteen".