18097435613 has 2 divisors, whose sum is σ = 18097435614. Its totient is φ = 18097435612.

The previous prime is 18097435567. The next prime is 18097435627. The reversal of 18097435613 is 31653479081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9090096964 + 9007338649 = 95342^2 + 94907^2 .

It is a cyclic number.

It is not a de Polignac number, because 18097435613 - 2⁶ = 18097435549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18097435633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9048717806 + 9048717807.

It is an arithmetic number, because the mean of its divisors is an integer number (9048717807).

Almost surely, 2^18097435613 is an apocalyptic number.

It is an amenable number.

18097435613 is a deficient number, since it is larger than the sum of its proper divisors (1).

18097435613 is an equidigital number, since it uses as much as digits as its factorization.

18097435613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 18097435613 in words is "eighteen billion, ninety-seven million, four hundred thirty-five thousand, six hundred thirteen".