18798629 has 2 divisors, whose sum is σ = 18798630. Its totient is φ = 18798628.

The previous prime is 18798589. The next prime is 18798649. The reversal of 18798629 is 92689781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18748900 + 49729 = 4330^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 18798629 - 2¹⁶ = 18733093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18798649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9399314 + 9399315.

It is an arithmetic number, because the mean of its divisors is an integer number (9399315).

Almost surely, 2^18798629 is an apocalyptic number.

It is an amenable number.

18798629 is a deficient number, since it is larger than the sum of its proper divisors (1).

18798629 is an equidigital number, since it uses as much as digits as its factorization.

18798629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The square root of 18798629 is about 4335.7385760675. The cubic root of 18798629 is about 265.8941152427.

The spelling of 18798629 in words is "eighteen million, seven hundred ninety-eight thousand, six hundred twenty-nine".