13019018385 has 32 divisors (see below), whose sum is σ = 21525138432. Its totient is φ = 6712381440.

The previous prime is 13019018381. The next prime is 13019018393. The reversal of 13019018385 is 58381091031.

It is not a de Polignac number, because 13019018385 - 2² = 13019018381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13019018381) 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 31 ways as a sum of consecutive naturals, for example, 439977 + ... + 468633.

It is an arithmetic number, because the mean of its divisors is an integer number (672660576).

Almost surely, 2^13019018385 is an apocalyptic number.

13019018385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13019018385 is a deficient number, since it is larger than the sum of its proper divisors (8506120047).

13019018385 is a wasteful number, since it uses less digits than its factorization.

13019018385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29673.

The product of its (nonzero) digits is 25920, while the sum is 39.

The spelling of 13019018385 in words is "thirteen billion, nineteen million, eighteen thousand, three hundred eighty-five".