19454442033 has 8 divisors (see below), whose sum is σ = 27934583488. Its totient is φ = 11971964304.

The previous prime is 19454442023. The next prime is 19454442037. The reversal of 19454442033 is 33024445491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19454442033 - 2¹⁴ = 19454425649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 498831847 = 19454442033 / (1 + 9 + 4 + 5 + 4 + 4 + 4 + 2 + 0 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19454441982 and 19454442000.

It is not an unprimeable number, because it can be changed into a prime (19454442037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249415885 + ... + 249415962.

It is an arithmetic number, because the mean of its divisors is an integer number (3491822936).

Almost surely, 2^19454442033 is an apocalyptic number.

19454442033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19454442033 is a deficient number, since it is larger than the sum of its proper divisors (8480141455).

19454442033 is a wasteful number, since it uses less digits than its factorization.

19454442033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498831863.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 19454442033 in words is "nineteen billion, four hundred fifty-four million, four hundred forty-two thousand, thirty-three".