2290927443561 has 9 divisors (see below), whose sum is σ = 3309123977341. Its totient is φ = 1527281935212.

The previous prime is 2290927443547. The next prime is 2290927443599. The reversal of 2290927443561 is 1653447290922.

It is a happy number.

The square root of 2290927443561 is 1513581.

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

2290927443561 is a `hidden beast` number, since 2 + 2 + 9 + 0 + 9 + 2 + 74 + 4 + 3 + 561 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 2290927443561 - 2¹⁹ = 2290926919273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2290927443498 and 2290927443507.

It is not an unprimeable number, because it can be changed into a prime (2290927343561) 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, 4288480 + ... + 4793006.

Almost surely, 2^{2290927443561} is an apocalyptic number.

2290927443561 is the 1513581-st square number.

2290927443561 is the 756791-st centered octagonal number.

It is an amenable number.

2290927443561 is a deficient number, since it is larger than the sum of its proper divisors (1018196533780).

2290927443561 is an frugal number, since it uses more digits than its factorization.

2290927443561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009060 (or 504530 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 2290927443561 in words is "two trillion, two hundred ninety billion, nine hundred twenty-seven million, four hundred forty-three thousand, five hundred sixty-one".