18348536 has 8 divisors (see below), whose sum is σ = 34403520. Its totient is φ = 9174264.

The previous prime is 18348521. The next prime is 18348541. The reversal of 18348536 is 63584381.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18348536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1146776 + ... + 1146791.

It is an arithmetic number, because the mean of its divisors is an integer number (4300440).

Almost surely, 2^18348536 is an apocalyptic number.

It is an amenable number.

18348536 is a deficient number, since it is larger than the sum of its proper divisors (16054984).

18348536 is a wasteful number, since it uses less digits than its factorization.

18348536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293573 (or 2293569 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 18348536 is about 4283.5191139996. The cubic root of 18348536 is about 263.7548612118.

The spelling of 18348536 in words is "eighteen million, three hundred forty-eight thousand, five hundred thirty-six".