20118029 has 2 divisors, whose sum is σ = 20118030. Its totient is φ = 20118028.

The previous prime is 20118013. The next prime is 20118037. The reversal of 20118029 is 92081102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18232900 + 1885129 = 4270^2 + 1373^2 .

It is a cyclic number.

It is not a de Polignac number, because 20118029 - 2⁴ = 20118013 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20117995 and 20118013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20118229) 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, 10059014 + 10059015.

It is an arithmetic number, because the mean of its divisors is an integer number (10059015).

Almost surely, 2^20118029 is an apocalyptic number.

It is an amenable number.

20118029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20118029 is an equidigital number, since it uses as much as digits as its factorization.

20118029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 20118029 is about 4485.3125866544. The cubic root of 20118029 is about 271.9746813587.

The spelling of 20118029 in words is "twenty million, one hundred eighteen thousand, twenty-nine".