198758949 has 8 divisors (see below), whose sum is σ = 273560832. Its totient is φ = 128231520.

The previous prime is 198758921. The next prime is 198758969. The reversal of 198758949 is 949857891.

198758949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198758949 - 2²⁵ = 165204517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198758892 and 198758901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198758969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1068504 + ... + 1068689.

It is an arithmetic number, because the mean of its divisors is an integer number (34195104).

Almost surely, 2^198758949 is an apocalyptic number.

It is an amenable number.

198758949 is a deficient number, since it is larger than the sum of its proper divisors (74801883).

198758949 is a wasteful number, since it uses less digits than its factorization.

198758949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137227.

The product of its digits is 6531840, while the sum is 60.

The square root of 198758949 is about 14098.1895646214. The cubic root of 198758949 is about 583.5914186053.

The spelling of 198758949 in words is "one hundred ninety-eight million, seven hundred fifty-eight thousand, nine hundred forty-nine".