196639814 has 16 divisors (see below), whose sum is σ = 337447968. Its totient is φ = 84186432.

The previous prime is 196639801. The next prime is 196639819. The reversal of 196639814 is 418936691.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196639819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7664 + ... + 21260.

It is an arithmetic number, because the mean of its divisors is an integer number (21090498).

Almost surely, 2^196639814 is an apocalyptic number.

196639814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

196639814 is a deficient number, since it is larger than the sum of its proper divisors (140808154).

196639814 is a wasteful number, since it uses less digits than its factorization.

196639814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14639.

The product of its digits is 279936, while the sum is 47.

The square root of 196639814 is about 14022.8318823268. The cubic root of 196639814 is about 581.5099518790.

The spelling of 196639814 in words is "one hundred ninety-six million, six hundred thirty-nine thousand, eight hundred fourteen".