19201819147 has 8 divisors (see below), whose sum is σ = 22254020352. Its totient is φ = 16226889000.

The previous prime is 19201819127. The next prime is 19201819157. The reversal of 19201819147 is 74191810291.

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

It is not a de Polignac number, because 19201819147 - 2⁷ = 19201819019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19201819127) 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, 19317229 + ... + 19318222.

It is an arithmetic number, because the mean of its divisors is an integer number (2781752544).

Almost surely, 2^19201819147 is an apocalyptic number.

19201819147 is a deficient number, since it is larger than the sum of its proper divisors (3052201205).

19201819147 is an equidigital number, since it uses as much as digits as its factorization.

19201819147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38635529.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 19201819147 in words is "nineteen billion, two hundred one million, eight hundred nineteen thousand, one hundred forty-seven".