19114788420 has 288 divisors, whose sum is σ = 71695583232. Its totient is φ = 4014157824.

The previous prime is 19114788397. The next prime is 19114788421. The reversal of 19114788420 is 2488741191.

19114788420 is a `hidden beast` number, since 1 + 9 + 1 + 147 + 88 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19114788421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3650124 + ... + 3655356.

Almost surely, 2^19114788420 is an apocalyptic number.

19114788420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19114788420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35847791616).

19114788420 is an abundant number, since it is smaller than the sum of its proper divisors (52580794812).

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

19114788420 is a wasteful number, since it uses less digits than its factorization.

19114788420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5491 (or 5486 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 19114788420 in words is "nineteen billion, one hundred fourteen million, seven hundred eighty-eight thousand, four hundred twenty".