1438059143538 has 48 divisors (see below), whose sum is σ = 3234253815936. Its totient is φ = 461462980320.

The previous prime is 1438059143509. The next prime is 1438059143539. The reversal of 1438059143538 is 8353419508341.

It is a happy number.

1438059143538 is a `hidden beast` number, since 1 + 4 + 3 + 8 + 0 + 591 + 43 + 5 + 3 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1438059143539) 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 23 ways as a sum of consecutive naturals, for example, 13881456 + ... + 13984667.

It is an arithmetic number, because the mean of its divisors is an integer number (67380287832).

Almost surely, 2^{1438059143538} is an apocalyptic number.

1438059143538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1438059143538 is an abundant number, since it is smaller than the sum of its proper divisors (1796194672398).

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

1438059143538 is a wasteful number, since it uses less digits than its factorization.

1438059143538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27866239 (or 27866236 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 1438059143538 in words is "one trillion, four hundred thirty-eight billion, fifty-nine million, one hundred forty-three thousand, five hundred thirty-eight".