4380278865 has 16 divisors (see below), whose sum is σ = 7009410816. Its totient is φ = 2335827200.

The previous prime is 4380278831. The next prime is 4380278891. The reversal of 4380278865 is 5688720834.

It is a happy number.

It is not a de Polignac number, because 4380278865 - 2¹⁸ = 4380016721 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127480 + ... + 158150.

It is an arithmetic number, because the mean of its divisors is an integer number (438088176).

Almost surely, 2^4380278865 is an apocalyptic number.

It is an amenable number.

4380278865 is a deficient number, since it is larger than the sum of its proper divisors (2629131951).

4380278865 is a wasteful number, since it uses less digits than its factorization.

4380278865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40200.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The square root of 4380278865 is about 66183.6752152674. The cubic root of 4380278865 is about 1636.1907008896.

The spelling of 4380278865 in words is "four billion, three hundred eighty million, two hundred seventy-eight thousand, eight hundred sixty-five".