198962387 has 8 divisors (see below), whose sum is σ = 216234480. Its totient is φ = 181971360.

The previous prime is 198962341. The next prime is 198962411. The reversal of 198962387 is 783269891.

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

It is a cyclic number.

It is not a de Polignac number, because 198962387 - 2⁸ = 198962131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198962587) 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, 68789 + ... + 71622.

It is an arithmetic number, because the mean of its divisors is an integer number (27029310).

Almost surely, 2^198962387 is an apocalyptic number.

198962387 is a deficient number, since it is larger than the sum of its proper divisors (17272093).

198962387 is a wasteful number, since it uses less digits than its factorization.

198962387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140533.

The product of its digits is 1306368, while the sum is 53.

The square root of 198962387 is about 14105.4027592267. The cubic root of 198962387 is about 583.7904606913.

The spelling of 198962387 in words is "one hundred ninety-eight million, nine hundred sixty-two thousand, three hundred eighty-seven".