19486748512 has 96 divisors (see below), whose sum is σ = 47977622784. Its totient is φ = 7568985600.

The previous prime is 19486748497. The next prime is 19486748527. The reversal of 19486748512 is 21584768491.

It is an interprime number because it is at equal distance from previous prime (19486748497) and next prime (19486748527).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803638 + ... + 827530.

It is an arithmetic number, because the mean of its divisors is an integer number (499766904).

Almost surely, 2^19486748512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19486748512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23988811392).

19486748512 is an abundant number, since it is smaller than the sum of its proper divisors (28490874272).

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

19486748512 is a wasteful number, since it uses less digits than its factorization.

19486748512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24252 (or 24244 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 19486748512 in words is "nineteen billion, four hundred eighty-six million, seven hundred forty-eight thousand, five hundred twelve".