1438271137 has 2 divisors, whose sum is σ = 1438271138. Its totient is φ = 1438271136.

The previous prime is 1438271117. The next prime is 1438271173. The reversal of 1438271137 is 7311728341.

It is a happy number.

Together with next prime (1438271173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 890664336 + 547606801 = 29844^2 + 23401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438271137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1438271096 and 1438271105.

It is not a weakly prime, because it can be changed into another prime (1438271117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719135568 + 719135569.

It is an arithmetic number, because the mean of its divisors is an integer number (719135569).

Almost surely, 2^1438271137 is an apocalyptic number.

It is an amenable number.

1438271137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438271137 is an equidigital number, since it uses as much as digits as its factorization.

1438271137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 1438271137 is about 37924.5453103923. The cubic root of 1438271137 is about 1128.7911307960.

Adding to 1438271137 its reverse (7311728341), we get a palindrome (8749999478).

The spelling of 1438271137 in words is "one billion, four hundred thirty-eight million, two hundred seventy-one thousand, one hundred thirty-seven".