19979539003 has 8 divisors (see below), whose sum is σ = 20235156480. Its totient is φ = 19723989480.

The previous prime is 19979539001. The next prime is 19979539043. The reversal of 19979539003 is 30093597991.

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

It is a cyclic number.

It is not a de Polignac number, because 19979539003 - 2¹ = 19979539001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19979539001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864468 + ... + 887278.

It is an arithmetic number, because the mean of its divisors is an integer number (2529394560).

Almost surely, 2^19979539003 is an apocalyptic number.

19979539003 is a deficient number, since it is larger than the sum of its proper divisors (255617477).

19979539003 is a wasteful number, since it uses less digits than its factorization.

19979539003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33977.

The product of its (nonzero) digits is 2066715, while the sum is 55.

The spelling of 19979539003 in words is "nineteen billion, nine hundred seventy-nine million, five hundred thirty-nine thousand, three".