18348869 has 16 divisors (see below), whose sum is σ = 23617536. Its totient is φ = 13834800.

The previous prime is 18348859. The next prime is 18348877. The reversal of 18348869 is 96884381.

It is not a de Polignac number, because 18348869 - 2⁸ = 18348613 is a prime.

It is a super-2 number, since 2×18348869² = 673361987158322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1457 + ... + 6230.

It is an arithmetic number, because the mean of its divisors is an integer number (1476096).

Almost surely, 2^18348869 is an apocalyptic number.

It is an amenable number.

18348869 is a deficient number, since it is larger than the sum of its proper divisors (5268667).

18348869 is a wasteful number, since it uses less digits than its factorization.

18348869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736.

The product of its digits is 331776, while the sum is 47.

The square root of 18348869 is about 4283.5579837327. The cubic root of 18348869 is about 263.7564567948.

The spelling of 18348869 in words is "eighteen million, three hundred forty-eight thousand, eight hundred sixty-nine".