197620464393 has 32 divisors (see below), whose sum is σ = 319423941120. Its totient is φ = 119755979280.

The previous prime is 197620464367. The next prime is 197620464403. The reversal of 197620464393 is 393464026791.

It is a happy number.

197620464393 is a `hidden beast` number, since 1 + 9 + 7 + 620 + 4 + 6 + 4 + 3 + 9 + 3 = 666.

It is not a de Polignac number, because 197620464393 - 2⁸ = 197620464137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197620464193) 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 31 ways as a sum of consecutive naturals, for example, 2872746 + ... + 2940732.

It is an arithmetic number, because the mean of its divisors is an integer number (9981998160).

Almost surely, 2^197620464393 is an apocalyptic number.

It is an amenable number.

197620464393 is a deficient number, since it is larger than the sum of its proper divisors (121803476727).

197620464393 is a wasteful number, since it uses less digits than its factorization.

197620464393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77794 (or 77788 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 197620464393 in words is "one hundred ninety-seven billion, six hundred twenty million, four hundred sixty-four thousand, three hundred ninety-three".