18451036748089 has 27 divisors (see below), whose sum is σ = 20545017787749. Its totient is φ = 16557994372920.

The previous prime is 18451036748083. The next prime is 18451036748101. The reversal of 18451036748089 is 98084763015481.

The square root of 18451036748089 is 4295467.

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

It is not a de Polignac number, because 18451036748089 - 2⁵ = 18451036748057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18451036748089.

It is not an unprimeable number, because it can be changed into a prime (18451036748083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3732758352 + ... + 3732763294.

Almost surely, 2^{18451036748089} is an apocalyptic number.

18451036748089 is the 4295467-th square number.

18451036748089 is the 2147734-th centered octagonal number.

It is an amenable number.

18451036748089 is a deficient number, since it is larger than the sum of its proper divisors (2093981039660).

18451036748089 is an frugal number, since it uses more digits than its factorization.

18451036748089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066 (or 5033 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 18451036748089 in words is "eighteen trillion, four hundred fifty-one billion, thirty-six million, seven hundred forty-eight thousand, eighty-nine".