613291030641 has 9 divisors (see below), whose sum is σ = 885868215609. Its totient is φ = 408859120836.

The previous prime is 613291030619. The next prime is 613291030669. The reversal of 613291030641 is 146030192316.

The square root of 613291030641 is 783129.

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

613291030641 is a `hidden beast` number, since 6 + 1 + 3 + 2 + 9 + 1 + 0 + 3 + 0 + 641 = 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 613291030641 - 2¹⁵ = 613290997873 is a prime.

It is a super-2 number, since 2×613291030641² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 613291030596 and 613291030605.

It is not an unprimeable number, because it can be changed into a prime (613291030141) 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, 2218866 + ... + 2479908.

Almost surely, 2^613291030641 is an apocalyptic number.

613291030641 is the 783129-th square number.

613291030641 is the 391565-th centered octagonal number.

It is an amenable number.

613291030641 is a deficient number, since it is larger than the sum of its proper divisors (272577184968).

613291030641 is an frugal number, since it uses more digits than its factorization.

613291030641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522092 (or 261046 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

Multiplying 613291030641 by its sum of digits (36), we get a square (22078477103076 = 4698774²).

The spelling of 613291030641 in words is "six hundred thirteen billion, two hundred ninety-one million, thirty thousand, six hundred forty-one".