198372307887 has 12 divisors (see below), whose sum is σ = 308579145784. Its totient is φ = 122075266320.

The previous prime is 198372307841. The next prime is 198372307897. The reversal of 198372307887 is 788703273891.

198372307887 is a `hidden beast` number, since 1 + 98 + 372 + 30 + 78 + 87 = 666.

It is not a de Polignac number, because 198372307887 - 2¹⁶ = 198372242351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198372307897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 847744789 + ... + 847745022.

Almost surely, 2^198372307887 is an apocalyptic number.

198372307887 is a deficient number, since it is larger than the sum of its proper divisors (110206837897).

198372307887 is a wasteful number, since it uses less digits than its factorization.

198372307887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695489830 (or 1695489827 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 198372307887 in words is "one hundred ninety-eight billion, three hundred seventy-two million, three hundred seven thousand, eight hundred eighty-seven".