19514991486 has 32 divisors (see below), whose sum is σ = 39506807808. Its totient is φ = 6425872640.

The previous prime is 19514991451. The next prime is 19514991491. The reversal of 19514991486 is 68419941591.

It is a congruent number.

It is an unprimeable number.

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, 183571 + ... + 269681.

It is an arithmetic number, because the mean of its divisors is an integer number (1234587744).

Almost surely, 2^19514991486 is an apocalyptic number.

19514991486 is an abundant number, since it is smaller than the sum of its proper divisors (19991816322).

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

19514991486 is a wasteful number, since it uses less digits than its factorization.

19514991486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86576.

The product of its digits is 2799360, while the sum is 57.

The spelling of 19514991486 in words is "nineteen billion, five hundred fourteen million, nine hundred ninety-one thousand, four hundred eighty-six".