196439507993 has 16 divisors (see below), whose sum is σ = 202308986880. Its totient is φ = 190630292496.

The previous prime is 196439507977. The next prime is 196439508037. The reversal of 196439507993 is 399705934691.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 196439507993 - 2⁴ = 196439507977 is a prime.

It is a super-3 number, since 3×196439507993³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (196439507963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18514496 + ... + 18525102.

It is an arithmetic number, because the mean of its divisors is an integer number (12644311680).

Almost surely, 2^196439507993 is an apocalyptic number.

It is an amenable number.

196439507993 is a deficient number, since it is larger than the sum of its proper divisors (5869478887).

196439507993 is a wasteful number, since it uses less digits than its factorization.

196439507993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13396.

The product of its (nonzero) digits is 49601160, while the sum is 65.

The spelling of 196439507993 in words is "one hundred ninety-six billion, four hundred thirty-nine million, five hundred seven thousand, nine hundred ninety-three".