1438235568 has 160 divisors (see below), whose sum is σ = 5147051520. Its totient is φ = 373559040.

The previous prime is 1438235567. The next prime is 1438235611. The reversal of 1438235568 is 8655328341.

1438235568 is a `hidden beast` number, since 1 + 4 + 3 + 82 + 3 + 5 + 568 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1438235567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11646 + ... + 54882.

It is an arithmetic number, because the mean of its divisors is an integer number (32169072).

Almost surely, 2^1438235568 is an apocalyptic number.

1438235568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1438235568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2573525760).

1438235568 is an abundant number, since it is smaller than the sum of its proper divisors (3708815952).

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

1438235568 is a wasteful number, since it uses less digits than its factorization.

1438235568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43272 (or 43260 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 1438235568 is about 37924.0763631759. The cubic root of 1438235568 is about 1128.7818255726.

It can be divided in two parts, 143 and 8235568, that added together give a triangular number (8235711 = T₄₀₅₈).

The spelling of 1438235568 in words is "one billion, four hundred thirty-eight million, two hundred thirty-five thousand, five hundred sixty-eight".