18301490089 has 3 divisors (see below), whose sum is σ = 18301625373. Its totient is φ = 18301354806.

The previous prime is 18301490059. The next prime is 18301490101. The reversal of 18301490089 is 98009410381.

The square root of 18301490089 is 135283.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98009410381 = 4093 ⋅23945617.

It is not a de Polignac number, because 18301490089 - 2¹³ = 18301481897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18301490059) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 67642 + ... + 202924.

It is an arithmetic number, because the mean of its divisors is an integer number (6100541791).

Almost surely, 2^18301490089 is an apocalyptic number.

18301490089 is the 135283-rd square number.

18301490089 is the 67642-nd centered octagonal number.

It is an amenable number.

18301490089 is a deficient number, since it is larger than the sum of its proper divisors (135284).

18301490089 is an frugal number, since it uses more digits than its factorization.

18301490089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270566 (or 135283 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 18301490089 in words is "eighteen billion, three hundred one million, four hundred ninety thousand, eighty-nine".