197836438 has 8 divisors (see below), whose sum is σ = 296815032. Its totient is φ = 98898096.

The previous prime is 197836433. The next prime is 197836469. The reversal of 197836438 is 834638791.

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 = 197836391 and 197836400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197836433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11281 + ... + 22867.

It is an arithmetic number, because the mean of its divisors is an integer number (37101879).

Almost surely, 2^197836438 is an apocalyptic number.

197836438 is a deficient number, since it is larger than the sum of its proper divisors (98978594).

197836438 is a wasteful number, since it uses less digits than its factorization.

197836438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20126.

The product of its digits is 870912, while the sum is 49.

The square root of 197836438 is about 14065.4341561148. The cubic root of 197836438 is about 582.6871329840.

It can be divided in two parts, 1978 and 36438, that added together give a 4-th power (38416 = 14⁴).

The spelling of 197836438 in words is "one hundred ninety-seven million, eight hundred thirty-six thousand, four hundred thirty-eight".