196931858 has 6 divisors (see below), whose sum is σ = 295427559. Its totient is φ = 98456006.

The previous prime is 196931857. The next prime is 196931863. The reversal of 196931858 is 858139691.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 98465929 + 98465929 = 9923^2 + 9923^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9923.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196931857) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14885 + ... + 24807.

Almost surely, 2^196931858 is an apocalyptic number.

196931858 is a deficient number, since it is larger than the sum of its proper divisors (98495701).

196931858 is an frugal number, since it uses more digits than its factorization.

196931858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19848 (or 9925 counting only the distinct ones).

The product of its digits is 466560, while the sum is 50.

The square root of 196931858 is about 14033.2411794282. The cubic root of 196931858 is about 581.7976902984.

Multiplying 196931858 by its sum of digits (50), we get a square (9846592900 = 99230²).

The spelling of 196931858 in words is "one hundred ninety-six million, nine hundred thirty-one thousand, eight hundred fifty-eight".