18828049 has 2 divisors, whose sum is σ = 18828050. Its totient is φ = 18828048.

The previous prime is 18828037. The next prime is 18828097. The reversal of 18828049 is 94082881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 165649 = 4320^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 18828049 - 2²³ = 10439441 is a prime.

It is a super-3 number, since 3×18828049³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (18825049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9414024 + 9414025.

It is an arithmetic number, because the mean of its divisors is an integer number (9414025).

Almost surely, 2^18828049 is an apocalyptic number.

It is an amenable number.

18828049 is a deficient number, since it is larger than the sum of its proper divisors (1).

18828049 is an equidigital number, since it uses as much as digits as its factorization.

18828049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 18828049 is about 4339.1299819203. The cubic root of 18828049 is about 266.0327517288.

The spelling of 18828049 in words is "eighteen million, eight hundred twenty-eight thousand, forty-nine".