18374145 has 8 divisors (see below), whose sum is σ = 29398656. Its totient is φ = 9799536.

The previous prime is 18374137. The next prime is 18374149. The reversal of 18374145 is 54147381.

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

It is not a de Polignac number, because 18374145 - 2³ = 18374137 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18374149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612457 + ... + 612486.

It is an arithmetic number, because the mean of its divisors is an integer number (3674832).

Almost surely, 2^18374145 is an apocalyptic number.

18374145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18374145 is a deficient number, since it is larger than the sum of its proper divisors (11024511).

18374145 is a wasteful number, since it uses less digits than its factorization.

18374145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224951.

The product of its digits is 13440, while the sum is 33.

The square root of 18374145 is about 4286.5073194852. The cubic root of 18374145 is about 263.8775114742.

The spelling of 18374145 in words is "eighteen million, three hundred seventy-four thousand, one hundred forty-five".