1438916534 has 32 divisors (see below), whose sum is σ = 2372321952. Its totient is φ = 649152000.

The previous prime is 1438916513. The next prime is 1438916539. The reversal of 1438916534 is 4356198341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438916539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3121064 + ... + 3121524.

It is an arithmetic number, because the mean of its divisors is an integer number (74135061).

Almost surely, 2^1438916534 is an apocalyptic number.

1438916534 is a deficient number, since it is larger than the sum of its proper divisors (933405418).

1438916534 is a wasteful number, since it uses less digits than its factorization.

1438916534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its digits is 311040, while the sum is 44.

The square root of 1438916534 is about 37933.0533176542. The cubic root of 1438916534 is about 1128.9599467789.

The spelling of 1438916534 in words is "one billion, four hundred thirty-eight million, nine hundred sixteen thousand, five hundred thirty-four".