19699149018 has 8 divisors (see below), whose sum is σ = 39398298048. Its totient is φ = 6566383004.

The previous prime is 19699148999. The next prime is 19699149049. The reversal of 19699149018 is 81094199691.

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

19699149018 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641595746 + ... + 1641595757.

It is an arithmetic number, because the mean of its divisors is an integer number (4924787256).

Almost surely, 2^19699149018 is an apocalyptic number.

19699149018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19699149018 is a wasteful number, since it uses less digits than its factorization.

19699149018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283191508.

The product of its (nonzero) digits is 1259712, while the sum is 57.

The spelling of 19699149018 in words is "nineteen billion, six hundred ninety-nine million, one hundred forty-nine thousand, eighteen".