19106779219 has 16 divisors (see below), whose sum is σ = 20963771136. Its totient is φ = 17269912800.

The previous prime is 19106779207. The next prime is 19106779261. The reversal of 19106779219 is 91297760191.

It is a cyclic number.

It is not a de Polignac number, because 19106779219 - 2¹³ = 19106771027 is a prime.

It is a super-2 number, since 2×19106779219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19106779619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5734384 + ... + 5737714.

It is an arithmetic number, because the mean of its divisors is an integer number (1310235696).

Almost surely, 2^19106779219 is an apocalyptic number.

19106779219 is a deficient number, since it is larger than the sum of its proper divisors (1856991917).

19106779219 is a wasteful number, since it uses less digits than its factorization.

19106779219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186.

The product of its (nonzero) digits is 428652, while the sum is 52.

The spelling of 19106779219 in words is "nineteen billion, one hundred six million, seven hundred seventy-nine thousand, two hundred nineteen".