42764181938 has 8 divisors (see below), whose sum is σ = 67919583132. Its totient is φ = 20124320896.

The previous prime is 42764181931. The next prime is 42764181949. The reversal of 42764181938 is 83918146724.

It can be written as a sum of positive squares in 2 ways, for example, as 42702982609 + 61199329 = 206647^2 + 7823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42764181938.

It is not an unprimeable number, because it can be changed into a prime (42764181931) by changing a digit.

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, 628884995 + ... + 628885062.

Almost surely, 2^42764181938 is an apocalyptic number.

42764181938 is a deficient number, since it is larger than the sum of its proper divisors (25155401194).

42764181938 is a wasteful number, since it uses less digits than its factorization.

42764181938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257770076.

The product of its digits is 2322432, while the sum is 53.

The spelling of 42764181938 in words is "forty-two billion, seven hundred sixty-four million, one hundred eighty-one thousand, nine hundred thirty-eight".