1438918056 has 96 divisors (see below), whose sum is σ = 4052880000. Its totient is φ = 460639872.

The previous prime is 1438918037. The next prime is 1438918069. The reversal of 1438918056 is 6508198341.

1438918056 is a `hidden beast` number, since 1 + 438 + 91 + 80 + 56 = 666.

It is an unprimeable number.

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, 413781 + ... + 417243.

It is an arithmetic number, because the mean of its divisors is an integer number (42217500).

Almost surely, 2^1438918056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1438918056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026440000).

1438918056 is an abundant number, since it is smaller than the sum of its proper divisors (2613961944).

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

1438918056 is a wasteful number, since it uses less digits than its factorization.

1438918056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703 (or 3696 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1438918056 is about 37933.0733793085. The cubic root of 1438918056 is about 1128.9603448275.

The spelling of 1438918056 in words is "one billion, four hundred thirty-eight million, nine hundred eighteen thousand, fifty-six".