3618874647541 has 2 divisors, whose sum is σ = 3618874647542. Its totient is φ = 3618874647540.

The previous prime is 3618874647533. The next prime is 3618874647599. The reversal of 3618874647541 is 1457464788163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3042770877316 + 576103770225 = 1744354^2 + 759015^2 .

It is a cyclic number.

It is not a de Polignac number, because 3618874647541 - 2³ = 3618874647533 is a prime.

It is a super-2 number, since 2×3618874647541² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3618872647541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1809437323770 + 1809437323771.

It is an arithmetic number, because the mean of its divisors is an integer number (1809437323771).

Almost surely, 2^{3618874647541} is an apocalyptic number.

It is an amenable number.

3618874647541 is a deficient number, since it is larger than the sum of its proper divisors (1).

3618874647541 is an equidigital number, since it uses as much as digits as its factorization.

3618874647541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108380160, while the sum is 64.

The spelling of 3618874647541 in words is "three trillion, six hundred eighteen billion, eight hundred seventy-four million, six hundred forty-seven thousand, five hundred forty-one".