1438112457 has 6 divisors (see below), whose sum is σ = 2077273562. Its totient is φ = 958741632.

The previous prime is 1438112449. The next prime is 1438112479. The reversal of 1438112457 is 7542118341.

It can be written as a sum of positive squares in only one way, i.e., 1288881801 + 149230656 = 35901^2 + 12216^2 .

It is not a de Polignac number, because 1438112457 - 2³ = 1438112449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1438112447) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 79895128 + ... + 79895145.

Almost surely, 2^1438112457 is an apocalyptic number.

It is an amenable number.

1438112457 is a deficient number, since it is larger than the sum of its proper divisors (639161105).

1438112457 is a wasteful number, since it uses less digits than its factorization.

1438112457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159790279 (or 159790276 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1438112457 is about 37922.4532038738. The cubic root of 1438112457 is about 1128.7496172594.

The spelling of 1438112457 in words is "one billion, four hundred thirty-eight million, one hundred twelve thousand, four hundred fifty-seven".