18350145 has 48 divisors (see below), whose sum is σ = 36009792. Its totient is φ = 8890560.

The previous prime is 18350131. The next prime is 18350147. The reversal of 18350145 is 54105381.

It is not a de Polignac number, because 18350145 - 2¹² = 18346049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18350147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12679 + ... + 14051.

It is an arithmetic number, because the mean of its divisors is an integer number (750204).

Almost surely, 2^18350145 is an apocalyptic number.

18350145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18350145 is a deficient number, since it is larger than the sum of its proper divisors (17659647).

18350145 is a wasteful number, since it uses less digits than its factorization.

18350145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 18350145 is about 4283.7069227481. The cubic root of 18350145 is about 263.7625706219.

The spelling of 18350145 in words is "eighteen million, three hundred fifty thousand, one hundred forty-five".