18469799 has 2 divisors, whose sum is σ = 18469800. Its totient is φ = 18469798.

The previous prime is 18469777. The next prime is 18469813. The reversal of 18469799 is 99796481.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18469799 - 2¹⁶ = 18404263 is a prime.

It is a super-2 number, since 2×18469799² = 682266950200802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18469799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18469499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9234899 + 9234900.

It is an arithmetic number, because the mean of its divisors is an integer number (9234900).

Almost surely, 2^18469799 is an apocalyptic number.

18469799 is a deficient number, since it is larger than the sum of its proper divisors (1).

18469799 is an equidigital number, since it uses as much as digits as its factorization.

18469799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 18469799 is about 4297.6504045816. The cubic root of 18469799 is about 264.3346259885.

The spelling of 18469799 in words is "eighteen million, four hundred sixty-nine thousand, seven hundred ninety-nine".