19269227147 has 4 divisors (see below), whose sum is σ = 19416320616. Its totient is φ = 19122133680.

The previous prime is 19269227143. The next prime is 19269227177. The reversal of 19269227147 is 74172296291.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19269227147 - 2² = 19269227143 is a prime.

It is a super-2 number, since 2×19269227147² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19269227095 and 19269227104.

It is not an unprimeable number, because it can be changed into a prime (19269227143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73546538 + ... + 73546799.

It is an arithmetic number, because the mean of its divisors is an integer number (4854080154).

Almost surely, 2^19269227147 is an apocalyptic number.

19269227147 is a deficient number, since it is larger than the sum of its proper divisors (147093469).

19269227147 is a wasteful number, since it uses less digits than its factorization.

19269227147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147093468.

The product of its digits is 762048, while the sum is 50.

The spelling of 19269227147 in words is "nineteen billion, two hundred sixty-nine million, two hundred twenty-seven thousand, one hundred forty-seven".