18596725669 has 2 divisors, whose sum is σ = 18596725670. Its totient is φ = 18596725668.

The previous prime is 18596725643. The next prime is 18596725711. The reversal of 18596725669 is 96652769581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17665865569 + 930860100 = 132913^2 + 30510^2 .

It is a cyclic number.

It is not a de Polignac number, because 18596725669 - 2⁷ = 18596725541 is a prime.

It is a super-2 number, since 2×18596725669² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18596725669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18596725619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9298362834 + 9298362835.

It is an arithmetic number, because the mean of its divisors is an integer number (9298362835).

Almost surely, 2^18596725669 is an apocalyptic number.

It is an amenable number.

18596725669 is a deficient number, since it is larger than the sum of its proper divisors (1).

18596725669 is an equidigital number, since it uses as much as digits as its factorization.

18596725669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 64.

The spelling of 18596725669 in words is "eighteen billion, five hundred ninety-six million, seven hundred twenty-five thousand, six hundred sixty-nine".