920536639388 has 12 divisors (see below), whose sum is σ = 1610954886240. Its totient is φ = 460263814752.

The previous prime is 920536639367. The next prime is 920536639403. The reversal of 920536639388 is 883936635029.

It is a self number, because there is not a number n which added to its sum of digits gives 920536639388.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 643481 + ... + 1501712.

It is an arithmetic number, because the mean of its divisors is an integer number (134246240520).

Almost surely, 2^920536639388 is an apocalyptic number.

It is an amenable number.

920536639388 is a deficient number, since it is larger than the sum of its proper divisors (690418246852).

920536639388 is a wasteful number, since it uses less digits than its factorization.

920536639388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252476 (or 2252474 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 62.

The spelling of 920536639388 in words is "nine hundred twenty billion, five hundred thirty-six million, six hundred thirty-nine thousand, three hundred eighty-eight".