4378186340 has 72 divisors (see below), whose sum is σ = 10585899072. Its totient is φ = 1508247360.

The previous prime is 4378186333. The next prime is 4378186343. The reversal of 4378186340 is 436818734.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 4378186291 and 4378186300.

It is not an unprimeable number, because it can be changed into a prime (4378186343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51857 + ... + 106983.

It is an arithmetic number, because the mean of its divisors is an integer number (147026376).

Almost surely, 2^4378186340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4378186340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5292949536).

4378186340 is an abundant number, since it is smaller than the sum of its proper divisors (6207712732).

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

4378186340 is a wasteful number, since it uses less digits than its factorization.

4378186340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55185 (or 55164 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 4378186340 is about 66167.8648590084. The cubic root of 4378186340 is about 1635.9301150995.

The spelling of 4378186340 in words is "four billion, three hundred seventy-eight million, one hundred eighty-six thousand, three hundred forty".