19069802649 has 16 divisors (see below), whose sum is σ = 29913416640. Its totient is φ = 11965366080.

The previous prime is 19069802639. The next prime is 19069802651. The reversal of 19069802649 is 94620896091.

It is not a de Polignac number, because 19069802649 - 2²¹ = 19067705497 is a prime.

It is a super-4 number, since 4×19069802649⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19069802595 and 19069802604.

It is not an unprimeable number, because it can be changed into a prime (19069802639) 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, 20772747 + ... + 20773664.

It is an arithmetic number, because the mean of its divisors is an integer number (1869588540).

Almost surely, 2^19069802649 is an apocalyptic number.

It is an amenable number.

19069802649 is a deficient number, since it is larger than the sum of its proper divisors (10843613991).

19069802649 is a wasteful number, since it uses less digits than its factorization.

19069802649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41546437 (or 41546431 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 19069802649 in words is "nineteen billion, sixty-nine million, eight hundred two thousand, six hundred forty-nine".