19421079802 has 8 divisors (see below), whose sum is σ = 30398211936. Its totient is φ = 9288342492.

The previous prime is 19421079773. The next prime is 19421079841. The reversal of 19421079802 is 20897012491.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211098648 + ... + 211098739.

It is an arithmetic number, because the mean of its divisors is an integer number (3799776492).

Almost surely, 2^19421079802 is an apocalyptic number.

19421079802 is a deficient number, since it is larger than the sum of its proper divisors (10977132134).

19421079802 is a wasteful number, since it uses less digits than its factorization.

19421079802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422197412.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 19421079802 in words is "nineteen billion, four hundred twenty-one million, seventy-nine thousand, eight hundred two".