18455029 has 2 divisors, whose sum is σ = 18455030. Its totient is φ = 18455028.

The previous prime is 18455027. The next prime is 18455033. The reversal of 18455029 is 92055481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12215025 + 6240004 = 3495^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 18455029 - 2¹ = 18455027 is a prime.

Together with 18455027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18454985 and 18455003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18455027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9227514 + 9227515.

It is an arithmetic number, because the mean of its divisors is an integer number (9227515).

Almost surely, 2^18455029 is an apocalyptic number.

It is an amenable number.

18455029 is a deficient number, since it is larger than the sum of its proper divisors (1).

18455029 is an equidigital number, since it uses as much as digits as its factorization.

18455029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 18455029 is about 4295.9316800899. The cubic root of 18455029 is about 264.2641458206.

The spelling of 18455029 in words is "eighteen million, four hundred fifty-five thousand, twenty-nine".