197680338 has 20 divisors (see below), whose sum is σ = 442950750. Its totient is φ = 65893392.

The previous prime is 197680337. The next prime is 197680339. The reversal of 197680338 is 833086791.

It is a happy number.

197680338 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (197680337) and next prime (197680339).

It can be written as a sum of positive squares in only one way, i.e., 127170729 + 70509609 = 11277^2 + 8397^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 197680293 and 197680302.

It is not an unprimeable number, because it can be changed into a prime (197680337) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 609963 + ... + 610286.

Almost surely, 2^197680338 is an apocalyptic number.

197680338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

197680338 is an abundant number, since it is smaller than the sum of its proper divisors (245270412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197680338 is a wasteful number, since it uses less digits than its factorization.

197680338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220263 (or 1220254 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 197680338 is about 14059.8839966765. The cubic root of 197680338 is about 582.5338390210.

The spelling of 197680338 in words is "one hundred ninety-seven million, six hundred eighty thousand, three hundred thirty-eight".