1438562563 has 4 divisors (see below), whose sum is σ = 1442482720. Its totient is φ = 1434642408.

The previous prime is 1438562537. The next prime is 1438562597. The reversal of 1438562563 is 3652658341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3652658341 = 10607 ⋅344363.

It is a cyclic number.

It is not a de Polignac number, because 1438562563 - 2²¹ = 1436465411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438562263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1959528 + ... + 1960261.

It is an arithmetic number, because the mean of its divisors is an integer number (360620680).

Almost surely, 2^1438562563 is an apocalyptic number.

1438562563 is a deficient number, since it is larger than the sum of its proper divisors (3920157).

1438562563 is an equidigital number, since it uses as much as digits as its factorization.

1438562563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3920156.

The product of its digits is 518400, while the sum is 43.

The square root of 1438562563 is about 37928.3872976429. The cubic root of 1438562563 is about 1128.8673651164.

It can be divided in two parts, 1438 and 562563, that added together give a square (564001 = 751²).

The spelling of 1438562563 in words is "one billion, four hundred thirty-eight million, five hundred sixty-two thousand, five hundred sixty-three".