18313635601 has 2 divisors, whose sum is σ = 18313635602. Its totient is φ = 18313635600.

The previous prime is 18313635569. The next prime is 18313635617. The reversal of 18313635601 is 10653631381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18312584976 + 1050625 = 135324^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 18313635601 - 2⁵ = 18313635569 is a prime.

It is not a weakly prime, because it can be changed into another prime (18313635661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9156817800 + 9156817801.

It is an arithmetic number, because the mean of its divisors is an integer number (9156817801).

Almost surely, 2^18313635601 is an apocalyptic number.

It is an amenable number.

18313635601 is a deficient number, since it is larger than the sum of its proper divisors (1).

18313635601 is an equidigital number, since it uses as much as digits as its factorization.

18313635601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 18313635601 in words is "eighteen billion, three hundred thirteen million, six hundred thirty-five thousand, six hundred one".