18054145 has 8 divisors (see below), whose sum is σ = 22193640. Its totient is φ = 14090880.

The previous prime is 18054137. The next prime is 18054163. The reversal of 18054145 is 54145081.

It can be written as a sum of positive squares in 4 ways, for example, as 848241 + 17205904 = 921^2 + 4148^2 .

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

It is not a de Polignac number, because 18054145 - 2³ = 18054137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43830 + ... + 44239.

It is an arithmetic number, because the mean of its divisors is an integer number (2774205).

Almost surely, 2^18054145 is an apocalyptic number.

It is an amenable number.

18054145 is a deficient number, since it is larger than the sum of its proper divisors (4139495).

18054145 is an equidigital number, since it uses as much as digits as its factorization.

18054145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88115.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 18054145 is about 4249.0169451298. The cubic root of 18054145 is about 262.3366542339.

The spelling of 18054145 in words is "eighteen million, fifty-four thousand, one hundred forty-five".