18488145 has 16 divisors (see below), whose sum is σ = 31856832. Its totient is φ = 9101760.

The previous prime is 18488143. The next prime is 18488147. The reversal of 18488145 is 54188481.

It is an interprime number because it is at equal distance from previous prime (18488143) and next prime (18488147).

It is not a de Polignac number, because 18488145 - 2¹ = 18488143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (18488143) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47211 + ... + 47600.

It is an arithmetic number, because the mean of its divisors is an integer number (1991052).

Almost surely, 2^18488145 is an apocalyptic number.

18488145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18488145 is a deficient number, since it is larger than the sum of its proper divisors (13368687).

18488145 is a wasteful number, since it uses less digits than its factorization.

18488145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94832.

The product of its digits is 40960, while the sum is 39.

The square root of 18488145 is about 4299.7842969154. The cubic root of 18488145 is about 264.4221179761.

The spelling of 18488145 in words is "eighteen million, four hundred eighty-eight thousand, one hundred forty-five".