538315193812 has 144 divisors (see below), whose sum is σ = 1127743585920. Its totient is φ = 222200064000.

The previous prime is 538315193803. The next prime is 538315193831. The reversal of 538315193812 is 218391513835.

It is a happy number.

It is a super-2 number, since 2×538315193812² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293999737 + ... + 294001567.

It is an arithmetic number, because the mean of its divisors is an integer number (7831552680).

Almost surely, 2^538315193812 is an apocalyptic number.

It is an amenable number.

538315193812 is an abundant number, since it is smaller than the sum of its proper divisors (589428392108).

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

538315193812 is a wasteful number, since it uses less digits than its factorization.

538315193812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334 (or 2301 counting only the distinct ones).

The product of its digits is 777600, while the sum is 49.

The spelling of 538315193812 in words is "five hundred thirty-eight billion, three hundred fifteen million, one hundred ninety-three thousand, eight hundred twelve".