613639498469 has 2 divisors, whose sum is σ = 613639498470. Its totient is φ = 613639498468.

The previous prime is 613639498463. The next prime is 613639498481. The reversal of 613639498469 is 964894936316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357051661444 + 256587837025 = 597538^2 + 506545^2 .

It is a cyclic number.

It is not a de Polignac number, because 613639498469 - 2⁴ = 613639498453 is a prime.

It is a super-2 number, since 2×613639498469² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 613639498399 and 613639498408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613639498463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306819749234 + 306819749235.

It is an arithmetic number, because the mean of its divisors is an integer number (306819749235).

Almost surely, 2^613639498469 is an apocalyptic number.

It is an amenable number.

613639498469 is a deficient number, since it is larger than the sum of its proper divisors (1).

613639498469 is an equidigital number, since it uses as much as digits as its factorization.

613639498469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181398528, while the sum is 68.

The spelling of 613639498469 in words is "six hundred thirteen billion, six hundred thirty-nine million, four hundred ninety-eight thousand, four hundred sixty-nine".