198028901901 has 32 divisors (see below), whose sum is σ = 270512824960. Its totient is φ = 128818252800.

The previous prime is 198028901899. The next prime is 198028901923. The reversal of 198028901901 is 109109820891.

It is not a de Polignac number, because 198028901901 - 2¹ = 198028901899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198028902901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44588841 + ... + 44593281.

It is an arithmetic number, because the mean of its divisors is an integer number (8453525780).

Almost surely, 2^198028901901 is an apocalyptic number.

It is an amenable number.

198028901901 is a deficient number, since it is larger than the sum of its proper divisors (72483923059).

198028901901 is a wasteful number, since it uses less digits than its factorization.

198028901901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397.

The product of its (nonzero) digits is 93312, while the sum is 48.

The spelling of 198028901901 in words is "one hundred ninety-eight billion, twenty-eight million, nine hundred one thousand, nine hundred one".