1438666607 has 12 divisors (see below), whose sum is σ = 1679787720. Its totient is φ = 1228547376.

The previous prime is 1438666601. The next prime is 1438666651. The reversal of 1438666607 is 7066668341.

It is not a de Polignac number, because 1438666607 - 2⁴ = 1438666591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438666601) 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 11 ways as a sum of consecutive naturals, for example, 41393 + ... + 67754.

It is an arithmetic number, because the mean of its divisors is an integer number (139982310).

Almost surely, 2^1438666607 is an apocalyptic number.

1438666607 is a deficient number, since it is larger than the sum of its proper divisors (241121113).

1438666607 is a wasteful number, since it uses less digits than its factorization.

1438666607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109430 (or 109423 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 1438666607 is about 37929.7588576569. The cubic root of 1438666607 is about 1128.8945795613.

The spelling of 1438666607 in words is "one billion, four hundred thirty-eight million, six hundred sixty-six thousand, six hundred seven".