1538716948738 has 8 divisors (see below), whose sum is σ = 2308844534220. Its totient is φ = 769102104000.

The previous prime is 1538716948649. The next prime is 1538716948739. The reversal of 1538716948738 is 8378496178351.

It can be written as a sum of positive squares in 2 ways, for example, as 1526517083529 + 12199865209 = 1235523^2 + 110453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1538716948739) 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 3 ways as a sum of consecutive naturals, for example, 128177683 + ... + 128189686.

Almost surely, 2^{1538716948738} is an apocalyptic number.

1538716948738 is a deficient number, since it is larger than the sum of its proper divisors (770127585482).

1538716948738 is a wasteful number, since it uses less digits than its factorization.

1538716948738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256370372.

The product of its digits is 243855360, while the sum is 70.

The spelling of 1538716948738 in words is "one trillion, five hundred thirty-eight billion, seven hundred sixteen million, nine hundred forty-eight thousand, seven hundred thirty-eight".