3878542465 has 32 divisors (see below), whose sum is σ = 5373838080. Its totient is φ = 2632372224.

The previous prime is 3878542403. The next prime is 3878542471. The reversal of 3878542465 is 5642458783.

It is a cyclic number.

It is not a de Polignac number, because 3878542465 - 2¹³ = 3878534273 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1458417 + ... + 1461073.

It is an arithmetic number, because the mean of its divisors is an integer number (167932440).

Almost surely, 2^3878542465 is an apocalyptic number.

3878542465 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3878542465 is a deficient number, since it is larger than the sum of its proper divisors (1495295615).

3878542465 is a wasteful number, since it uses less digits than its factorization.

3878542465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081.

The product of its digits is 6451200, while the sum is 52.

The square root of 3878542465 is about 62277.9452535165. The cubic root of 3878542465 is about 1571.1688140085.

The spelling of 3878542465 in words is "three billion, eight hundred seventy-eight million, five hundred forty-two thousand, four hundred sixty-five".