18048403 has 2 divisors, whose sum is σ = 18048404. Its totient is φ = 18048402.

The previous prime is 18048379. The next prime is 18048409. The reversal of 18048403 is 30484081.

It is a strong prime.

It is an emirp because it is prime and its reverse (30484081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18048403 is a prime.

It is not a weakly prime, because it can be changed into another prime (18048409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9024201 + 9024202.

It is an arithmetic number, because the mean of its divisors is an integer number (9024202).

Almost surely, 2^18048403 is an apocalyptic number.

18048403 is a deficient number, since it is larger than the sum of its proper divisors (1).

18048403 is an equidigital number, since it uses as much as digits as its factorization.

18048403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18048403 is about 4248.3412056943. The cubic root of 18048403 is about 262.3088398125.

The spelling of 18048403 in words is "eighteen million, forty-eight thousand, four hundred three".