18960390048609 has 45 divisors (see below), whose sum is σ = 29268556730721. Its totient is φ = 12231725925240.

The previous prime is 18960390048581. The next prime is 18960390048641. The reversal of 18960390048609 is 90684009306981.

It is a happy number.

The square root of 18960390048609 is 4354353.

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

18960390048609 is a `hidden beast` number, since 1 + 8 + 9 + 60 + 3 + 90 + 0 + 486 + 0 + 9 = 666.

It is not a de Polignac number, because 18960390048609 - 2⁹ = 18960390048097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18960390048109) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1214856684 + ... + 1214872290.

Almost surely, 2^{18960390048609} is an apocalyptic number.

18960390048609 is the 4354353-rd square number.

18960390048609 is the 2177177-th centered octagonal number.

It is an amenable number.

18960390048609 is a deficient number, since it is larger than the sum of its proper divisors (10308166682112).

18960390048609 is an frugal number, since it uses more digits than its factorization.

18960390048609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31288 (or 15641 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 18960390048609 in words is "eighteen trillion, nine hundred sixty billion, three hundred ninety million, forty-eight thousand, six hundred nine".