1438958868 has 24 divisors (see below), whose sum is σ = 3465880320. Its totient is φ = 464180160.

The previous prime is 1438958861. The next prime is 1438958881. The reversal of 1438958868 is 8688598341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438958861) 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 7 ways as a sum of consecutive naturals, for example, 1933713 + ... + 1934456.

It is an arithmetic number, because the mean of its divisors is an integer number (144411680).

Almost surely, 2^1438958868 is an apocalyptic number.

It is an amenable number.

1438958868 is an abundant number, since it is smaller than the sum of its proper divisors (2026921452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1438958868 is a wasteful number, since it uses less digits than its factorization.

1438958868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868207 (or 3868205 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 60.

The square root of 1438958868 is about 37933.6113229416. The cubic root of 1438958868 is about 1128.9710182854.

The spelling of 1438958868 in words is "one billion, four hundred thirty-eight million, nine hundred fifty-eight thousand, eight hundred sixty-eight".