196109658 has 48 divisors (see below), whose sum is σ = 453772800. Its totient is φ = 61074720.

The previous prime is 196109651. The next prime is 196109729. The reversal of 196109658 is 856901691.

196109658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (196109651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10123 + ... + 22241.

It is an arithmetic number, because the mean of its divisors is an integer number (9453600).

Almost surely, 2^196109658 is an apocalyptic number.

196109658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 196109658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226886400).

196109658 is an abundant number, since it is smaller than the sum of its proper divisors (257663142).

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

196109658 is a wasteful number, since it uses less digits than its factorization.

196109658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12187 (or 12184 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 196109658 is about 14003.9158095156. The cubic root of 196109658 is about 580.9868830622.

The spelling of 196109658 in words is "one hundred ninety-six million, one hundred nine thousand, six hundred fifty-eight".