1427987673838 has 8 divisors (see below), whose sum is σ = 2336707102680. Its totient is φ = 649085306280.

The previous prime is 1427987673811. The next prime is 1427987673881. The reversal of 1427987673838 is 8383767897241.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32454265293 + ... + 32454265336.

It is an arithmetic number, because the mean of its divisors is an integer number (292088387835).

Almost surely, 2^{1427987673838} is an apocalyptic number.

1427987673838 is a deficient number, since it is larger than the sum of its proper divisors (908719428842).

1427987673838 is a wasteful number, since it uses less digits than its factorization.

1427987673838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64908530642.

The product of its digits is 682795008, while the sum is 73.

The spelling of 1427987673838 in words is "one trillion, four hundred twenty-seven billion, nine hundred eighty-seven million, six hundred seventy-three thousand, eight hundred thirty-eight".