198180734 has 8 divisors (see below), whose sum is σ = 298082208. Its totient is φ = 98820000.

The previous prime is 198180733. The next prime is 198180739. The reversal of 198180734 is 437081891.

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 = 198180691 and 198180700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198180733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134267 + ... + 135734.

It is an arithmetic number, because the mean of its divisors is an integer number (37260276).

Almost surely, 2^198180734 is an apocalyptic number.

198180734 is a deficient number, since it is larger than the sum of its proper divisors (99901474).

198180734 is a wasteful number, since it uses less digits than its factorization.

198180734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270370.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 198180734 is about 14077.6679176631. The cubic root of 198180734 is about 583.0249551185.

The spelling of 198180734 in words is "one hundred ninety-eight million, one hundred eighty thousand, seven hundred thirty-four".