1375681234638 has 16 divisors (see below), whose sum is σ = 2751428010240. Its totient is φ = 458549488056.

The previous prime is 1375681234601. The next prime is 1375681234657. The reversal of 1375681234638 is 8364321865731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2455878 + ... + 2963561.

It is an arithmetic number, because the mean of its divisors is an integer number (171964250640).

Almost surely, 2^{1375681234638} is an apocalyptic number.

1375681234638 is an abundant number, since it is smaller than the sum of its proper divisors (1375746775602).

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

1375681234638 is a wasteful number, since it uses less digits than its factorization.

1375681234638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461751.

The product of its digits is 17418240, while the sum is 57.

The spelling of 1375681234638 in words is "one trillion, three hundred seventy-five billion, six hundred eighty-one million, two hundred thirty-four thousand, six hundred thirty-eight".