198940510 has 16 divisors (see below), whose sum is σ = 359363376. Its totient is φ = 79293888.

The previous prime is 198940471. The next prime is 198940517. The reversal of 198940510 is 15049891.

It is a self number, because there is not a number n which added to its sum of digits gives 198940510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198940517) 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 7 ways as a sum of consecutive naturals, for example, 32319 + ... + 37978.

It is an arithmetic number, because the mean of its divisors is an integer number (22460211).

Almost surely, 2^198940510 is an apocalyptic number.

198940510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198940510 is a deficient number, since it is larger than the sum of its proper divisors (160422866).

198940510 is a wasteful number, since it uses less digits than its factorization.

198940510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70587.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 198940510 is about 14104.6272549118. The cubic root of 198940510 is about 583.7690629249.

The spelling of 198940510 in words is "one hundred ninety-eight million, nine hundred forty thousand, five hundred ten".