1438334755 has 16 divisors (see below), whose sum is σ = 2027751264. Its totient is φ = 965594880.

The previous prime is 1438334753. The next prime is 1438334773. The reversal of 1438334755 is 5574338341.

It is not a de Polignac number, because 1438334755 - 2¹ = 1438334753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1438334753) 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 15 ways as a sum of consecutive naturals, for example, 1005114 + ... + 1006543.

It is an arithmetic number, because the mean of its divisors is an integer number (126734454).

Almost surely, 2^1438334755 is an apocalyptic number.

1438334755 is a deficient number, since it is larger than the sum of its proper divisors (589416509).

1438334755 is a wasteful number, since it uses less digits than its factorization.

1438334755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011686.

The product of its digits is 604800, while the sum is 43.

The square root of 1438334755 is about 37925.3840455176. The cubic root of 1438334755 is about 1128.8077735493.

The spelling of 1438334755 in words is "one billion, four hundred thirty-eight million, three hundred thirty-four thousand, seven hundred fifty-five".