198901963 has 4 divisors (see below), whose sum is σ = 214202128. Its totient is φ = 183601800.

The previous prime is 198901957. The next prime is 198901991. The reversal of 198901963 is 369109891.

198901963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369109891 = 37 ⋅9975943.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198901963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198901933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7650063 + ... + 7650088.

It is an arithmetic number, because the mean of its divisors is an integer number (53550532).

Almost surely, 2^198901963 is an apocalyptic number.

198901963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

198901963 is a deficient number, since it is larger than the sum of its proper divisors (15300165).

198901963 is a wasteful number, since it uses less digits than its factorization.

198901963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15300164.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 198901963 is about 14103.2607222585. The cubic root of 198901963 is about 583.7313565111.

The spelling of 198901963 in words is "one hundred ninety-eight million, nine hundred one thousand, nine hundred sixty-three".