197918102 has 4 divisors (see below), whose sum is σ = 296877156. Its totient is φ = 98959050.

The previous prime is 197918101. The next prime is 197918107. The reversal of 197918102 is 201819791.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197918101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49479524 + ... + 49479527.

It is an arithmetic number, because the mean of its divisors is an integer number (74219289).

Almost surely, 2^197918102 is an apocalyptic number.

197918102 is a deficient number, since it is larger than the sum of its proper divisors (98959054).

197918102 is an equidigital number, since it uses as much as digits as its factorization.

197918102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98959053.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 197918102 is about 14068.3368597713. The cubic root of 197918102 is about 582.7672968753.

The spelling of 197918102 in words is "one hundred ninety-seven million, nine hundred eighteen thousand, one hundred two".