19702375197 has 4 divisors (see below), whose sum is σ = 26269833600. Its totient is φ = 13134916796.

The previous prime is 19702375171. The next prime is 19702375213. The reversal of 19702375197 is 79157320791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19702375197 - 2¹¹ = 19702373149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19702375117) 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 3 ways as a sum of consecutive naturals, for example, 3283729197 + ... + 3283729202.

It is an arithmetic number, because the mean of its divisors is an integer number (6567458400).

Almost surely, 2^19702375197 is an apocalyptic number.

It is an amenable number.

19702375197 is a deficient number, since it is larger than the sum of its proper divisors (6567458403).

19702375197 is an equidigital number, since it uses as much as digits as its factorization.

19702375197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567458402.

The product of its (nonzero) digits is 833490, while the sum is 51.

The spelling of 19702375197 in words is "nineteen billion, seven hundred two million, three hundred seventy-five thousand, one hundred ninety-seven".