4382991378 has 16 divisors (see below), whose sum is σ = 9739980960. Its totient is φ = 1460997108.

The previous prime is 4382991377. The next prime is 4382991401. The reversal of 4382991378 is 8731992834.

It is a super-2 number, since 2×4382991378² = 38421226839244677768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 81166507 = 4382991378 / (4 + 3 + 8 + 2 + 9 + 9 + 1 + 3 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (4382991377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40583200 + ... + 40583307.

It is an arithmetic number, because the mean of its divisors is an integer number (608748810).

Almost surely, 2^4382991378 is an apocalyptic number.

4382991378 is an abundant number, since it is smaller than the sum of its proper divisors (5356989582).

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

4382991378 is a wasteful number, since it uses less digits than its factorization.

4382991378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81166518 (or 81166512 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 4382991378 is about 66204.1643554240. The cubic root of 4382991378 is about 1636.5283713800.

The spelling of 4382991378 in words is "four billion, three hundred eighty-two million, nine hundred ninety-one thousand, three hundred seventy-eight".