19099199649 has 8 divisors (see below), whose sum is σ = 25469308800. Its totient is φ = 12730945136.

The previous prime is 19099199633. The next prime is 19099199681. The reversal of 19099199649 is 94699199091.

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

It is a cyclic number.

It is not a de Polignac number, because 19099199649 - 2⁴ = 19099199633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19099199649.

It is not an unprimeable number, because it can be changed into a prime (19099199689) 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, 439449 + ... + 480950.

It is an arithmetic number, because the mean of its divisors is an integer number (3183663600).

Almost surely, 2^19099199649 is an apocalyptic number.

It is an amenable number.

19099199649 is a deficient number, since it is larger than the sum of its proper divisors (6370109151).

19099199649 is an equidigital number, since it uses as much as digits as its factorization.

19099199649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927319.

The product of its (nonzero) digits is 12754584, while the sum is 66.

The spelling of 19099199649 in words is "nineteen billion, ninety-nine million, one hundred ninety-nine thousand, six hundred forty-nine".