1438626867 has 32 divisors (see below), whose sum is σ = 2025703680. Its totient is φ = 906837120.

The previous prime is 1438626817. The next prime is 1438626869. The reversal of 1438626867 is 7686268341.

It is not a de Polignac number, because 1438626867 - 2¹⁴ = 1438610483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438626869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1628808 + ... + 1629690.

It is an arithmetic number, because the mean of its divisors is an integer number (63303240).

Almost surely, 2^1438626867 is an apocalyptic number.

1438626867 is a deficient number, since it is larger than the sum of its proper divisors (587076813).

1438626867 is a wasteful number, since it uses less digits than its factorization.

1438626867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283.

The product of its digits is 2322432, while the sum is 51.

The square root of 1438626867 is about 37929.2349909671. The cubic root of 1438626867 is about 1128.8841850559.

The spelling of 1438626867 in words is "one billion, four hundred thirty-eight million, six hundred twenty-six thousand, eight hundred sixty-seven".