4895139878 has 12 divisors (see below), whose sum is σ = 7587215100. Its totient is φ = 2368615140.

The previous prime is 4895139869. The next prime is 4895139889. The reversal of 4895139878 is 8789315984.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 4895139878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1271528 + ... + 1275371.

It is an arithmetic number, because the mean of its divisors is an integer number (632267925).

Almost surely, 2^4895139878 is an apocalyptic number.

4895139878 is a deficient number, since it is larger than the sum of its proper divisors (2692075222).

4895139878 is a wasteful number, since it uses less digits than its factorization.

4895139878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546963 (or 2546932 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 62.

The square root of 4895139878 is about 69965.2762304273. The cubic root of 4895139878 is about 1697.9375077294.

The spelling of 4895139878 in words is "four billion, eight hundred ninety-five million, one hundred thirty-nine thousand, eight hundred seventy-eight".