38781283778 has 8 divisors (see below), whose sum is σ = 58172848272. Its totient is φ = 19390334356.

The previous prime is 38781283771. The next prime is 38781283823. The reversal of 38781283778 is 87738218783.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38781283778.

It is not an unprimeable number, because it can be changed into a prime (38781283771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67601 + ... + 286587.

It is an arithmetic number, because the mean of its divisors is an integer number (7271606034).

Almost surely, 2^38781283778 is an apocalyptic number.

38781283778 is a deficient number, since it is larger than the sum of its proper divisors (19391564494).

38781283778 is a wasteful number, since it uses less digits than its factorization.

38781283778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307536.

The product of its digits is 25288704, while the sum is 62.

The spelling of 38781283778 in words is "thirty-eight billion, seven hundred eighty-one million, two hundred eighty-three thousand, seven hundred seventy-eight".