198487690816 has 56 divisors (see below), whose sum is σ = 412648253696. Its totient is φ = 94608898560.

The previous prime is 198487690693. The next prime is 198487690867. The reversal of 198487690816 is 618096784891.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613671 + ... + 879526.

It is an arithmetic number, because the mean of its divisors is an integer number (7368718816).

Almost surely, 2^198487690816 is an apocalyptic number.

198487690816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198487690816 is an abundant number, since it is smaller than the sum of its proper divisors (214160562880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198487690816 is a wasteful number, since it uses less digits than its factorization.

198487690816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493307 (or 1493297 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 67.

The spelling of 198487690816 in words is "one hundred ninety-eight billion, four hundred eighty-seven million, six hundred ninety thousand, eight hundred sixteen".