1438381476 has 225 divisors, whose sum is σ = 4491042171. Its totient is φ = 401408784.

The previous prime is 1438381447. The next prime is 1438381481. The reversal of 1438381476 is 6741838341.

The square root of 1438381476 is 37926.

It is a perfect power (a square), and thus also a powerful number.

1438381476 is a `hidden beast` number, since 143 + 8 + 38 + 1 + 476 = 666.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 74 ways as a sum of consecutive naturals, for example, 33450711 + ... + 33450753.

Almost surely, 2^1438381476 is an apocalyptic number.

1438381476 is the 37926-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1438381476

1438381476 is an abundant number, since it is smaller than the sum of its proper divisors (3052660695).

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

1438381476 is an frugal number, since it uses more digits than its factorization.

1438381476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 55 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The cubic root of 1438381476 is about 1128.8199956594.

It can be divided in two parts, 14383 and 81476, that added together give a palindrome (95859).

The spelling of 1438381476 in words is "one billion, four hundred thirty-eight million, three hundred eighty-one thousand, four hundred seventy-six".