19474366464 has 480 divisors, whose sum is σ = 69623321600. Its totient is φ = 5255331840.

The previous prime is 19474366447. The next prime is 19474366469. The reversal of 19474366464 is 46466347491.

19474366464 is a `hidden beast` number, since 1 + 94 + 7 + 436 + 64 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 19474366464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19474366469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58834779 + ... + 58835109.

Almost surely, 2^19474366464 is an apocalyptic number.

19474366464 is a gapful number since it is divisible by the number (14) 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 19474366464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34811660800).

19474366464 is an abundant number, since it is smaller than the sum of its proper divisors (50148955136).

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

19474366464 is an equidigital number, since it uses as much as digits as its factorization.

19474366464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 362 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The spelling of 19474366464 in words is "nineteen billion, four hundred seventy-four million, three hundred sixty-six thousand, four hundred sixty-four".