1438738252 has 12 divisors (see below), whose sum is σ = 2877476560. Its totient is φ = 616602096.

The previous prime is 1438738219. The next prime is 1438738267. The reversal of 1438738252 is 2528378341.

1438738252 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1438738199 and 1438738208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25691727 + ... + 25691782.

Almost surely, 2^1438738252 is an apocalyptic number.

It is an amenable number.

1438738252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1438738252 is a wasteful number, since it uses less digits than its factorization.

1438738252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51383520 (or 51383518 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 1438738252 is about 37930.7032890243. The cubic root of 1438738252 is about 1128.9133187441.

The spelling of 1438738252 in words is "one billion, four hundred thirty-eight million, seven hundred thirty-eight thousand, two hundred fifty-two".