1438909496503 has 2 divisors, whose sum is σ = 1438909496504. Its totient is φ = 1438909496502.

The previous prime is 1438909496491. The next prime is 1438909496551. The reversal of 1438909496503 is 3056949098341.

It is a weak prime.

It is an emirp because it is prime and its reverse (3056949098341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1438909496503 - 2¹³ = 1438909488311 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1438909496803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719454748251 + 719454748252.

It is an arithmetic number, because the mean of its divisors is an integer number (719454748252).

Almost surely, 2^{1438909496503} is an apocalyptic number.

1438909496503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438909496503 is an equidigital number, since it uses as much as digits as its factorization.

1438909496503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 1438909496503 in words is "one trillion, four hundred thirty-eight billion, nine hundred nine million, four hundred ninety-six thousand, five hundred three".