13145438237 has 2 divisors, whose sum is σ = 13145438238. Its totient is φ = 13145438236.

The previous prime is 13145438227. The next prime is 13145438269. The reversal of 13145438237 is 73283454131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12755217721 + 390220516 = 112939^2 + 19754^2 .

It is a cyclic number.

It is not a de Polignac number, because 13145438237 - 2¹⁶ = 13145372701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13145438194 and 13145438203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13145438227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6572719118 + 6572719119.

It is an arithmetic number, because the mean of its divisors is an integer number (6572719119).

Almost surely, 2^13145438237 is an apocalyptic number.

It is an amenable number.

13145438237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13145438237 is an equidigital number, since it uses as much as digits as its factorization.

13145438237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 41.

The spelling of 13145438237 in words is "thirteen billion, one hundred forty-five million, four hundred thirty-eight thousand, two hundred thirty-seven".