197303649893 has 4 divisors (see below), whose sum is σ = 225489885600. Its totient is φ = 169117414188.

The previous prime is 197303649883. The next prime is 197303649919. The reversal of 197303649893 is 398946303791.

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, and also an emirpimes, since its reverse is a distinct semiprime: 398946303791 = 7 ⋅56992329113.

It is a cyclic number.

It is not a de Polignac number, because 197303649893 - 2²² = 197299455589 is a prime.

It is a super-2 number, since 2×197303649893² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197303649883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14093117843 + ... + 14093117856.

It is an arithmetic number, because the mean of its divisors is an integer number (56372471400).

Almost surely, 2^197303649893 is an apocalyptic number.

It is an amenable number.

197303649893 is a deficient number, since it is larger than the sum of its proper divisors (28186235707).

197303649893 is an equidigital number, since it uses as much as digits as its factorization.

197303649893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28186235706.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 197303649893 in words is "one hundred ninety-seven billion, three hundred three million, six hundred forty-nine thousand, eight hundred ninety-three".