1438845507 has 24 divisors (see below), whose sum is σ = 2400643440. Its totient is φ = 820730880.

The previous prime is 1438845487. The next prime is 1438845517. The reversal of 1438845507 is 7055488341.

1438845507 is a `hidden beast` number, since 14 + 3 + 8 + 84 + 550 + 7 = 666.

It is not a de Polignac number, because 1438845507 - 2²² = 1434651203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438845517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425782 + ... + 429147.

It is an arithmetic number, because the mean of its divisors is an integer number (100026810).

Almost surely, 2^1438845507 is an apocalyptic number.

1438845507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1438845507 is a deficient number, since it is larger than the sum of its proper divisors (961797933).

1438845507 is a wasteful number, since it uses less digits than its factorization.

1438845507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854963 (or 854960 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 1438845507 is about 37932.1170909297. The cubic root of 1438845507 is about 1128.9413707749.

It can be divided in two parts, 14388 and 45507, that added together give a palindrome (59895).

The spelling of 1438845507 in words is "one billion, four hundred thirty-eight million, eight hundred forty-five thousand, five hundred seven".