1845438635017 has 2 divisors, whose sum is σ = 1845438635018. Its totient is φ = 1845438635016.

The previous prime is 1845438634987. The next prime is 1845438635057. The reversal of 1845438635017 is 7105368345481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1524642135696 + 320796499321 = 1234764^2 + 566389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1845438635017 is a prime.

It is a super-2 number, since 2×1845438635017² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1845438635057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922719317508 + 922719317509.

It is an arithmetic number, because the mean of its divisors is an integer number (922719317509).

Almost surely, 2^{1845438635017} is an apocalyptic number.

It is an amenable number.

1845438635017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845438635017 is an equidigital number, since it uses as much as digits as its factorization.

1845438635017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 1845438635017 in words is "one trillion, eight hundred forty-five billion, four hundred thirty-eight million, six hundred thirty-five thousand, seventeen".