18145485 has 32 divisors (see below), whose sum is σ = 32446080. Its totient is φ = 9621504.

The previous prime is 18145481. The next prime is 18145489. The reversal of 18145485 is 58454181.

It is an interprime number because it is at equal distance from previous prime (18145481) and next prime (18145489).

It is not a de Polignac number, because 18145485 - 2² = 18145481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18145481) 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 31 ways as a sum of consecutive naturals, for example, 34434 + ... + 34956.

It is an arithmetic number, because the mean of its divisors is an integer number (1013940).

Almost surely, 2^18145485 is an apocalyptic number.

18145485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18145485 is a deficient number, since it is larger than the sum of its proper divisors (14300595).

18145485 is a wasteful number, since it uses less digits than its factorization.

18145485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 788 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 18145485 is about 4259.7517533302. The cubic root of 18145485 is about 262.7783170534.

The spelling of 18145485 in words is "eighteen million, one hundred forty-five thousand, four hundred eighty-five".