198057736851 has 16 divisors (see below), whose sum is σ = 286561524480. Its totient is φ = 120951286560.

The previous prime is 198057736823. The next prime is 198057736867. The reversal of 198057736851 is 158637750891.

It is a happy number.

198057736851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-198057736851 is a prime.

It is a super-3 number, since 3×198057736851³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198057736801) 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 in 15 ways as a sum of consecutive naturals, for example, 19378111 + ... + 19388328.

It is an arithmetic number, because the mean of its divisors is an integer number (17910095280).

Almost surely, 2^198057736851 is an apocalyptic number.

198057736851 is a deficient number, since it is larger than the sum of its proper divisors (88503787629).

198057736851 is a wasteful number, since it uses less digits than its factorization.

198057736851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38766586.

The product of its (nonzero) digits is 12700800, while the sum is 60.

The spelling of 198057736851 in words is "one hundred ninety-eight billion, fifty-seven million, seven hundred thirty-six thousand, eight hundred fifty-one".