19946908642 has 8 divisors (see below), whose sum is σ = 29925974736. Its totient is φ = 9971583732.

The previous prime is 19946908633. The next prime is 19946908669. The reversal of 19946908642 is 24680964991.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921928 + ... + 943315.

It is an arithmetic number, because the mean of its divisors is an integer number (3740746842).

Almost surely, 2^19946908642 is an apocalyptic number.

19946908642 is a deficient number, since it is larger than the sum of its proper divisors (9979066094).

19946908642 is a wasteful number, since it uses less digits than its factorization.

19946908642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870592.

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 19946908642 in words is "nineteen billion, nine hundred forty-six million, nine hundred eight thousand, six hundred forty-two".