18148774 has 8 divisors (see below), whose sum is σ = 31112208. Its totient is φ = 7778040.

The previous prime is 18148769. The next prime is 18148783. The reversal of 18148774 is 47784181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648157 + ... + 648184.

It is an arithmetic number, because the mean of its divisors is an integer number (3889026).

Almost surely, 2^18148774 is an apocalyptic number.

18148774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18148774 is a deficient number, since it is larger than the sum of its proper divisors (12963434).

18148774 is a wasteful number, since it uses less digits than its factorization.

18148774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296350.

The product of its digits is 50176, while the sum is 40.

The square root of 18148774 is about 4260.1377911988. The cubic root of 18148774 is about 262.7941929159.

The spelling of 18148774 in words is "eighteen million, one hundred forty-eight thousand, seven hundred seventy-four".