196437638 has 8 divisors (see below), whose sum is σ = 304161600. Its totient is φ = 95050440.

The previous prime is 196437623. The next prime is 196437649. The reversal of 196437638 is 836734691.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 196437592 and 196437601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1584113 + ... + 1584236.

It is an arithmetic number, because the mean of its divisors is an integer number (38020200).

Almost surely, 2^196437638 is an apocalyptic number.

196437638 is a deficient number, since it is larger than the sum of its proper divisors (107723962).

196437638 is a wasteful number, since it uses less digits than its factorization.

196437638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168382.

The product of its digits is 653184, while the sum is 47.

The square root of 196437638 is about 14015.6212134889. The cubic root of 196437638 is about 581.3105896218.

The spelling of 196437638 in words is "one hundred ninety-six million, four hundred thirty-seven thousand, six hundred thirty-eight".