18343736 has 8 divisors (see below), whose sum is σ = 34394520. Its totient is φ = 9171864.

The previous prime is 18343733. The next prime is 18343751. The reversal of 18343736 is 63734381.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18343696 and 18343705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18343733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1146476 + ... + 1146491.

It is an arithmetic number, because the mean of its divisors is an integer number (4299315).

Almost surely, 2^18343736 is an apocalyptic number.

It is an amenable number.

18343736 is a deficient number, since it is larger than the sum of its proper divisors (16050784).

18343736 is a wasteful number, since it uses less digits than its factorization.

18343736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292973 (or 2292969 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 18343736 is about 4282.9587903691. The cubic root of 18343736 is about 263.7318596719.

The spelling of 18343736 in words is "eighteen million, three hundred forty-three thousand, seven hundred thirty-six".