18145337 has 12 divisors (see below), whose sum is σ = 21559680. Its totient is φ = 15220296.

The previous prime is 18145327. The next prime is 18145343. The reversal of 18145337 is 73354181.

It is not a de Polignac number, because 18145337 - 2¹⁶ = 18079801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18145327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1637 + ... + 6242.

It is an arithmetic number, because the mean of its divisors is an integer number (1796640).

Almost surely, 2^18145337 is an apocalyptic number.

It is an amenable number.

18145337 is a deficient number, since it is larger than the sum of its proper divisors (3414343).

18145337 is an equidigital number, since it uses as much as digits as its factorization.

18145337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940 (or 7933 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 18145337 is about 4259.7343813905. The cubic root of 18145337 is about 262.7776026187. Note that the first 3 decimals are identical.

The spelling of 18145337 in words is "eighteen million, one hundred forty-five thousand, three hundred thirty-seven".