19642491058 has 8 divisors (see below), whose sum is σ = 29544020352. Its totient is φ = 9794484276.

The previous prime is 19642491053. The next prime is 19642491059. The reversal of 19642491058 is 85019424691.

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

It is not an unprimeable number, because it can be changed into a prime (19642491053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13379710 + ... + 13381177.

It is an arithmetic number, because the mean of its divisors is an integer number (3693002544).

Almost surely, 2^19642491058 is an apocalyptic number.

19642491058 is a deficient number, since it is larger than the sum of its proper divisors (9901529294).

19642491058 is a wasteful number, since it uses less digits than its factorization.

19642491058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26761256.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 19642491058 in words is "nineteen billion, six hundred forty-two million, four hundred ninety-one thousand, fifty-eight".