19860548481 has 24 divisors (see below), whose sum is σ = 28896510240. Its totient is φ = 13144217856.

The previous prime is 19860548473. The next prime is 19860548489. The reversal of 19860548481 is 18484506891.

It is a happy number.

19860548481 is a `hidden beast` number, since 1 + 9 + 86 + 0 + 5 + 484 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (19860548473) and next prime (19860548489).

It is not a de Polignac number, because 19860548481 - 2³ = 19860548473 is a prime.

It is a super-2 number, since 2×19860548481² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19860548489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 707410 + ... + 734948.

It is an arithmetic number, because the mean of its divisors is an integer number (1204021260).

Almost surely, 2^19860548481 is an apocalyptic number.

It is an amenable number.

19860548481 is a deficient number, since it is larger than the sum of its proper divisors (9035961759).

19860548481 is a wasteful number, since it uses less digits than its factorization.

19860548481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125 (or 28122 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 19860548481 in words is "nineteen billion, eight hundred sixty million, five hundred forty-eight thousand, four hundred eighty-one".