19150419218 has 30 divisors (see below), whose sum is σ = 33528028821. Its totient is φ = 8203212696.

The previous prime is 19150419179. The next prime is 19150419227. The reversal of 19150419218 is 81291405191.

It can be written as a sum of positive squares in 2 ways, for example, as 12558115969 + 6592303249 = 112063^2 + 81193^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=97853.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9588596 + ... + 9590592.

Almost surely, 2^19150419218 is an apocalyptic number.

19150419218 is a deficient number, since it is larger than the sum of its proper divisors (14377609603).

19150419218 is an frugal number, since it uses more digits than its factorization.

19150419218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 41.

The spelling of 19150419218 in words is "nineteen billion, one hundred fifty million, four hundred nineteen thousand, two hundred eighteen".