1438539476 has 48 divisors (see below), whose sum is σ = 2914941120. Its totient is φ = 619423200.

The previous prime is 1438539467. The next prime is 1438539491. The reversal of 1438539476 is 6749358341.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 94046 + ... + 108266.

It is an arithmetic number, because the mean of its divisors is an integer number (60727940).

Almost surely, 2^1438539476 is an apocalyptic number.

It is an amenable number.

1438539476 is an abundant number, since it is smaller than the sum of its proper divisors (1476401644).

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

1438539476 is a wasteful number, since it uses less digits than its factorization.

1438539476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14277 (or 14253 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 1438539476 is about 37928.0829465450. The cubic root of 1438539476 is about 1128.8613261483.

The spelling of 1438539476 in words is "one billion, four hundred thirty-eight million, five hundred thirty-nine thousand, four hundred seventy-six".