198151730698 has 16 divisors (see below), whose sum is σ = 298142145000. Its totient is φ = 98771136192.

The previous prime is 198151730633. The next prime is 198151730701. The reversal of 198151730698 is 896037151891.

It can be written as a sum of positive squares in 4 ways, for example, as 191815093089 + 6336637609 = 437967^2 + 79603^2 .

It is a super-2 number, since 2×198151730698² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3594568 + ... + 3649276.

Almost surely, 2^198151730698 is an apocalyptic number.

198151730698 is a deficient number, since it is larger than the sum of its proper divisors (99990414302).

198151730698 is a wasteful number, since it uses less digits than its factorization.

198151730698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60249.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The spelling of 198151730698 in words is "one hundred ninety-eight billion, one hundred fifty-one million, seven hundred thirty thousand, six hundred ninety-eight".