196858642 has 8 divisors (see below), whose sum is σ = 300859596. Its totient is φ = 96572112.

The previous prime is 196858631. The next prime is 196858643. The reversal of 196858642 is 246858691.

It can be written as a sum of positive squares in 2 ways, for example, as 191517921 + 5340721 = 13839^2 + 2311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (196858643) 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, 928473 + ... + 928684.

Almost surely, 2^196858642 is an apocalyptic number.

196858642 is a deficient number, since it is larger than the sum of its proper divisors (104000954).

196858642 is a wasteful number, since it uses less digits than its factorization.

196858642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857212.

The product of its digits is 829440, while the sum is 49.

The square root of 196858642 is about 14030.6322737074. The cubic root of 196858642 is about 581.7255804492.

Adding to 196858642 its sum of digits (49), we get a palindrome (196858691).

The spelling of 196858642 in words is "one hundred ninety-six million, eight hundred fifty-eight thousand, six hundred forty-two".