18835469 has 2 divisors, whose sum is σ = 18835470. Its totient is φ = 18835468.

The previous prime is 18835463. The next prime is 18835477. The reversal of 18835469 is 96453881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11812969 + 7022500 = 3437^2 + 2650^2 .

It is a cyclic number.

It is not a de Polignac number, because 18835469 - 2²⁴ = 2058253 is a prime.

It is a super-2 number, since 2×18835469² = 709549784899922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18835463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9417734 + 9417735.

It is an arithmetic number, because the mean of its divisors is an integer number (9417735).

Almost surely, 2^18835469 is an apocalyptic number.

It is an amenable number.

18835469 is a deficient number, since it is larger than the sum of its proper divisors (1).

18835469 is an equidigital number, since it uses as much as digits as its factorization.

18835469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 18835469 is about 4339.9849078079. The cubic root of 18835469 is about 266.0676943432.

The spelling of 18835469 in words is "eighteen million, eight hundred thirty-five thousand, four hundred sixty-nine".