18349469 has 8 divisors (see below), whose sum is σ = 19258560. Its totient is φ = 17449696.

The previous prime is 18349439. The next prime is 18349481. The reversal of 18349469 is 96494381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18349469 - 2¹² = 18345373 is a prime.

It is a super-2 number, since 2×18349469² = 673406025163922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18349439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (2407320).

Almost surely, 2^18349469 is an apocalyptic number.

It is an amenable number.

18349469 is a deficient number, since it is larger than the sum of its proper divisors (909091).

18349469 is a wasteful number, since it uses less digits than its factorization.

18349469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659.

The product of its digits is 186624, while the sum is 44.

The square root of 18349469 is about 4283.6280183975. The cubic root of 18349469 is about 263.7593316705.

The spelling of 18349469 in words is "eighteen million, three hundred forty-nine thousand, four hundred sixty-nine".