234818745561 has 9 divisors (see below), whose sum is σ = 339184732341. Its totient is φ = 156544861212.

The previous prime is 234818745547. The next prime is 234818745607. The reversal of 234818745561 is 165547818432.

It is a happy number.

The square root of 234818745561 is 484581.

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

234818745561 is a `hidden beast` number, since 2 + 3 + 4 + 8 + 1 + 8 + 74 + 5 + 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 234818745561 - 2¹³ = 234818737369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234818745498 and 234818745507.

It is not an unprimeable number, because it can be changed into a prime (234818745521) 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, 1372980 + ... + 1534506.

Almost surely, 2^234818745561 is an apocalyptic number.

234818745561 is the 484581-st square number.

234818745561 is the 242291-st centered octagonal number.

It is an amenable number.

234818745561 is a deficient number, since it is larger than the sum of its proper divisors (104365986780).

234818745561 is an frugal number, since it uses more digits than its factorization.

234818745561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323060 (or 161530 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 234818745561 in words is "two hundred thirty-four billion, eight hundred eighteen million, seven hundred forty-five thousand, five hundred sixty-one".