31628496198 has 32 divisors (see below), whose sum is σ = 68355465696. Its totient is φ = 9698623488.

The previous prime is 31628496197. The next prime is 31628496203. The reversal of 31628496198 is 89169482613.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31628496191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669115 + ... + 714822.

It is an arithmetic number, because the mean of its divisors is an integer number (2136108303).

Almost surely, 2^31628496198 is an apocalyptic number.

31628496198 is an abundant number, since it is smaller than the sum of its proper divisors (36726969498).

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

31628496198 is a wasteful number, since it uses less digits than its factorization.

31628496198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384248.

The product of its digits is 4478976, while the sum is 57.

The spelling of 31628496198 in words is "thirty-one billion, six hundred twenty-eight million, four hundred ninety-six thousand, one hundred ninety-eight".