4155383778 has 128 divisors (see below), whose sum is σ = 10602676224. Its totient is φ = 1056153600.

The previous prime is 4155383773. The next prime is 4155383807. The reversal of 4155383778 is 8773835514.

It is a self number, because there is not a number n which added to its sum of digits gives 4155383778.

It is not an unprimeable number, because it can be changed into a prime (4155383773) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6482338 + ... + 6482978.

It is an arithmetic number, because the mean of its divisors is an integer number (82833408).

Almost surely, 2^4155383778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4155383778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5301338112).

4155383778 is an abundant number, since it is smaller than the sum of its proper divisors (6447292446).

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

4155383778 is a wasteful number, since it uses less digits than its factorization.

4155383778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 2822400, while the sum is 51.

The square root of 4155383778 is about 64462.2663113856. The cubic root of 4155383778 is about 1607.6951934261.

The spelling of 4155383778 in words is "four billion, one hundred fifty-five million, three hundred eighty-three thousand, seven hundred seventy-eight".