19719602049 has 16 divisors (see below), whose sum is σ = 30091322240. Its totient is φ = 11252442240.

The previous prime is 19719602011. The next prime is 19719602051. The reversal of 19719602049 is 94020691791.

It is not a de Polignac number, because 19719602049 - 2¹¹ = 19719600001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19719601989 and 19719602007.

It is not an unprimeable number, because it can be changed into a prime (19719602009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647332 + ... + 677109.

It is an arithmetic number, because the mean of its divisors is an integer number (1880707640).

Almost surely, 2^19719602049 is an apocalyptic number.

It is an amenable number.

19719602049 is a deficient number, since it is larger than the sum of its proper divisors (10371720191).

19719602049 is a wasteful number, since it uses less digits than its factorization.

19719602049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325160.

The product of its (nonzero) digits is 244944, while the sum is 48.

The spelling of 19719602049 in words is "nineteen billion, seven hundred nineteen million, six hundred two thousand, forty-nine".