19419419628 has 192 divisors, whose sum is σ = 58807705600. Its totient is φ = 5427259200.

The previous prime is 19419419609. The next prime is 19419419629. The reversal of 19419419628 is 82691491491.

19419419628 is a `hidden beast` number, since 1 + 9 + 4 + 1 + 9 + 4 + 1 + 9 + 628 = 666.

It is a super-2 number, since 2×19419419628² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (19419419629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7647183 + ... + 7649721.

Almost surely, 2^19419419628 is an apocalyptic number.

19419419628 is a gapful number since it is divisible by the number (18) 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 19419419628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29403852800).

19419419628 is an abundant number, since it is smaller than the sum of its proper divisors (39388285972).

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

19419419628 is a wasteful number, since it uses less digits than its factorization.

19419419628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777 (or 2769 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The spelling of 19419419628 in words is "nineteen billion, four hundred nineteen million, four hundred nineteen thousand, six hundred twenty-eight".