3918724878 has 16 divisors (see below), whose sum is σ = 7840817280. Its totient is φ = 1305680376.

The previous prime is 3918724837. The next prime is 3918724921. The reversal of 3918724878 is 8784278193.

It is a super-2 number, since 2×3918724878² = 30712809338912229768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125058 + ... + 153221.

It is an arithmetic number, because the mean of its divisors is an integer number (490051080).

Almost surely, 2^3918724878 is an apocalyptic number.

3918724878 is an abundant number, since it is smaller than the sum of its proper divisors (3922092402).

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

3918724878 is a wasteful number, since it uses less digits than its factorization.

3918724878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280631.

The product of its digits is 5419008, while the sum is 57.

The square root of 3918724878 is about 62599.7194722149. The cubic root of 3918724878 is about 1576.5760493838.

The spelling of 3918724878 in words is "three billion, nine hundred eighteen million, seven hundred twenty-four thousand, eight hundred seventy-eight".