19812137327486 has 96 divisors (see below), whose sum is σ = 36255324924000. Its totient is φ = 8088748523520.

The previous prime is 19812137327483. The next prime is 19812137327519. The reversal of 19812137327486 is 68472373121891.

It is a super-3 number, since 3×19812137327486³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19812137327483) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35041790 + ... + 35602686.

It is an arithmetic number, because the mean of its divisors is an integer number (377659634625).

Almost surely, 2^{19812137327486} is an apocalyptic number.

19812137327486 is a deficient number, since it is larger than the sum of its proper divisors (16443187596514).

19812137327486 is a wasteful number, since it uses less digits than its factorization.

19812137327486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561162 (or 561155 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 62.

The spelling of 19812137327486 in words is "nineteen trillion, eight hundred twelve billion, one hundred thirty-seven million, three hundred twenty-seven thousand, four hundred eighty-six".