18051448 has 8 divisors (see below), whose sum is σ = 33846480. Its totient is φ = 9025720.

The previous prime is 18051413. The next prime is 18051457. The reversal of 18051448 is 84415081.

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

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, 1128208 + ... + 1128223.

It is an arithmetic number, because the mean of its divisors is an integer number (4230810).

Almost surely, 2^18051448 is an apocalyptic number.

It is an amenable number.

18051448 is a deficient number, since it is larger than the sum of its proper divisors (15795032).

18051448 is a wasteful number, since it uses less digits than its factorization.

18051448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256437 (or 2256433 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 18051448 is about 4248.6995657495. The cubic root of 18051448 is about 262.3235906190.

The spelling of 18051448 in words is "eighteen million, fifty-one thousand, four hundred forty-eight".