19157979203 has 8 divisors (see below), whose sum is σ = 21193975296. Its totient is φ = 17171043400.

The previous prime is 19157979179. The next prime is 19157979221. The reversal of 19157979203 is 30297975191.

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 19157979203 - 2¹⁴ = 19157962819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19157979233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12264251 + ... + 12265812.

It is an arithmetic number, because the mean of its divisors is an integer number (2649246912).

Almost surely, 2^19157979203 is an apocalyptic number.

19157979203 is a deficient number, since it is larger than the sum of its proper divisors (2035996093).

19157979203 is a wasteful number, since it uses less digits than its factorization.

19157979203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24530145.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The spelling of 19157979203 in words is "nineteen billion, one hundred fifty-seven million, nine hundred seventy-nine thousand, two hundred three".