19049428368 has 200 divisors, whose sum is σ = 58348515456. Its totient is φ = 5987520000.

The previous prime is 19049428351. The next prime is 19049428397. The reversal of 19049428368 is 86382494091.

19049428368 is a `hidden beast` number, since 1 + 90 + 494 + 2 + 8 + 3 + 68 = 666.

It is a super-2 number, since 2×19049428368² (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 an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 2111868 + ... + 2120868.

Almost surely, 2^19049428368 is an apocalyptic number.

19049428368 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 19049428368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29174257728).

19049428368 is an abundant number, since it is smaller than the sum of its proper divisors (39299087088).

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

19049428368 is a wasteful number, since it uses less digits than its factorization.

19049428368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9115 (or 9100 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 19049428368 in words is "nineteen billion, forty-nine million, four hundred twenty-eight thousand, three hundred sixty-eight".