198002057 has 12 divisors (see below), whose sum is σ = 221367696. Its totient is φ = 175544040.

The previous prime is 198002041. The next prime is 198002069. The reversal of 198002057 is 750200891.

198002057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198002057 - 2⁴ = 198002041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198002027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305708 + ... + 306354.

It is an arithmetic number, because the mean of its divisors is an integer number (18447308).

Almost surely, 2^198002057 is an apocalyptic number.

It is an amenable number.

198002057 is a deficient number, since it is larger than the sum of its proper divisors (23365639).

198002057 is an frugal number, since it uses more digits than its factorization.

198002057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 198002057 is about 14071.3203715927. The cubic root of 198002057 is about 582.8496866980.

The spelling of 198002057 in words is "one hundred ninety-eight million, two thousand, fifty-seven".