18451148 has 12 divisors (see below), whose sum is σ = 33077352. Its totient is φ = 9000480.

The previous prime is 18451133. The next prime is 18451151. The reversal of 18451148 is 84115481.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56090 + ... + 56417.

It is an arithmetic number, because the mean of its divisors is an integer number (2756446).

Almost surely, 2^18451148 is an apocalyptic number.

It is an amenable number.

18451148 is a deficient number, since it is larger than the sum of its proper divisors (14626204).

18451148 is a wasteful number, since it uses less digits than its factorization.

18451148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112552 (or 112550 counting only the distinct ones).

The product of its digits is 5120, while the sum is 32.

The square root of 18451148 is about 4295.4799499008. The cubic root of 18451148 is about 264.2456200473.

The spelling of 18451148 in words is "eighteen million, four hundred fifty-one thousand, one hundred forty-eight".