196386459990 has 64 divisors (see below), whose sum is σ = 540127954944. Its totient is φ = 44766004608.

The previous prime is 196386459887. The next prime is 196386459991. The reversal of 196386459990 is 99954683691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196386459991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197009 + ... + 1351148.

It is an arithmetic number, because the mean of its divisors is an integer number (8439499296).

Almost surely, 2^196386459990 is an apocalyptic number.

196386459990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196386459990 is an abundant number, since it is smaller than the sum of its proper divisors (343741494954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196386459990 is a wasteful number, since it uses less digits than its factorization.

196386459990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548541.

The product of its (nonzero) digits is 113374080, while the sum is 69.

The spelling of 196386459990 in words is "one hundred ninety-six billion, three hundred eighty-six million, four hundred fifty-nine thousand, nine hundred ninety".