19189382645 has 32 divisors (see below), whose sum is σ = 23581808640. Its totient is φ = 14986888000.

The previous prime is 19189382603. The next prime is 19189382657. The reversal of 19189382645 is 54628398191.

It is not a de Polignac number, because 19189382645 - 2²⁴ = 19172605429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19762010 + ... + 19762980.

It is an arithmetic number, because the mean of its divisors is an integer number (736931520).

Almost surely, 2^19189382645 is an apocalyptic number.

It is an amenable number.

19189382645 is a deficient number, since it is larger than the sum of its proper divisors (4392425995).

19189382645 is a wasteful number, since it uses less digits than its factorization.

19189382645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its digits is 3732480, while the sum is 56.

The spelling of 19189382645 in words is "nineteen billion, one hundred eighty-nine million, three hundred eighty-two thousand, six hundred forty-five".