2878164823 has 4 divisors (see below), whose sum is σ = 3003302448. Its totient is φ = 2753027200.

The previous prime is 2878164797. The next prime is 2878164833. The reversal of 2878164823 is 3284618782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2878164823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878164833) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 62568778 + ... + 62568823.

It is an arithmetic number, because the mean of its divisors is an integer number (750825612).

Almost surely, 2^2878164823 is an apocalyptic number.

2878164823 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2878164823 is a deficient number, since it is larger than the sum of its proper divisors (125137625).

2878164823 is a wasteful number, since it uses less digits than its factorization.

2878164823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125137624.

The product of its digits is 1032192, while the sum is 49.

The square root of 2878164823 is about 53648.5304831363. The cubic root of 2878164823 is about 1422.4550571778.

The spelling of 2878164823 in words is "two billion, eight hundred seventy-eight million, one hundred sixty-four thousand, eight hundred twenty-three".