618143460841 has 9 divisors (see below), whose sum is σ = 620249016261. Its totient is φ = 616045036992.

The previous prime is 618143460811. The next prime is 618143460911. The reversal of 618143460841 is 148064341816.

The square root of 618143460841 is 786221.

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

It can be written as a sum of positive squares in 4 ways, for example, as 93648852441 + 524494608400 = 306021^2 + 724220^2 .

It is not a de Polignac number, because 618143460841 - 2⁷ = 618143460713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618143460791 and 618143460800.

It is not an unprimeable number, because it can be changed into a prime (618143460811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 264955311 + ... + 264957643.

Almost surely, 2^618143460841 is an apocalyptic number.

618143460841 is the 786221-st square number.

618143460841 is the 393111-st centered octagonal number.

It is an amenable number.

618143460841 is a deficient number, since it is larger than the sum of its proper divisors (2105555420).

618143460841 is an frugal number, since it uses more digits than its factorization.

618143460841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340 (or 2670 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 618143460841 in words is "six hundred eighteen billion, one hundred forty-three million, four hundred sixty thousand, eight hundred forty-one".