2199487726489 has 9 divisors (see below), whose sum is σ = 2227800439263. Its totient is φ = 2171530430472.

The previous prime is 2199487726459. The next prime is 2199487726493. The reversal of 2199487726489 is 9846277849912.

The square root of 2199487726489 is 1483067.

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

It can be written as a sum of positive squares in only one way, i.e., 2197613529225 + 1874197264 = 1482435^2 + 43292^2 .

It is not a de Polignac number, because 2199487726489 - 2⁷ = 2199487726361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2199487726409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 117152907 + ... + 117171679.

Almost surely, 2^{2199487726489} is an apocalyptic number.

2199487726489 is the 1483067-th square number.

2199487726489 is the 741534-th centered octagonal number.

It is an amenable number.

2199487726489 is a deficient number, since it is larger than the sum of its proper divisors (28312712774).

2199487726489 is an frugal number, since it uses more digits than its factorization.

2199487726489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37704 (or 18852 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 76.

The spelling of 2199487726489 in words is "two trillion, one hundred ninety-nine billion, four hundred eighty-seven million, seven hundred twenty-six thousand, four hundred eighty-nine".