1438277316 has 96 divisors (see below), whose sum is σ = 4076513280. Its totient is φ = 385288704.

The previous prime is 1438277311. The next prime is 1438277327. The reversal of 1438277316 is 6137728341.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1438277311) 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 31 ways as a sum of consecutive naturals, for example, 402345 + ... + 405903.

It is an arithmetic number, because the mean of its divisors is an integer number (42463680).

Almost surely, 2^1438277316 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 1438277316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038256640).

1438277316 is an abundant number, since it is smaller than the sum of its proper divisors (2638235964).

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

1438277316 is a wasteful number, since it uses less digits than its factorization.

1438277316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873 (or 3871 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 1438277316 is about 37924.6267746961. The cubic root of 1438277316 is about 1128.7927472715.

The spelling of 1438277316 in words is "one billion, four hundred thirty-eight million, two hundred seventy-seven thousand, three hundred sixteen".