2878143985 has 8 divisors (see below), whose sum is σ = 3603936960. Its totient is φ = 2202405744.

The previous prime is 2878143973. The next prime is 2878144007. The reversal of 2878143985 is 5893418782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2878143985 - 2⁹ = 2878143473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12513555 + ... + 12513784.

It is an arithmetic number, because the mean of its divisors is an integer number (450492120).

Almost surely, 2^2878143985 is an apocalyptic number.

It is an amenable number.

2878143985 is a deficient number, since it is larger than the sum of its proper divisors (725792975).

2878143985 is a wasteful number, since it uses less digits than its factorization.

2878143985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25027367.

The product of its digits is 3870720, while the sum is 55.

The square root of 2878143985 is about 53648.3362742965. The cubic root of 2878143985 is about 1422.4516242971.

The spelling of 2878143985 in words is "two billion, eight hundred seventy-eight million, one hundred forty-three thousand, nine hundred eighty-five".