1438505113 has 2 divisors, whose sum is σ = 1438505114. Its totient is φ = 1438505112.

The previous prime is 1438505093. The next prime is 1438505161. The reversal of 1438505113 is 3115058341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995276304 + 443228809 = 31548^2 + 21053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438505113 - 2¹³ = 1438496921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1438505413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719252556 + 719252557.

It is an arithmetic number, because the mean of its divisors is an integer number (719252557).

Almost surely, 2^1438505113 is an apocalyptic number.

It is an amenable number.

1438505113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438505113 is an equidigital number, since it uses as much as digits as its factorization.

1438505113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1438505113 is about 37927.6299417720. The cubic root of 1438505113 is about 1128.8523375477.

The spelling of 1438505113 in words is "one billion, four hundred thirty-eight million, five hundred five thousand, one hundred thirteen".