2878143923 has 2 divisors, whose sum is σ = 2878143924. Its totient is φ = 2878143922.

The previous prime is 2878143913. The next prime is 2878143941. The reversal of 2878143923 is 3293418782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2878143923 - 2⁶ = 2878143859 is a prime.

It is not a weakly prime, because it can be changed into another prime (2878143913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439071961 + 1439071962.

It is an arithmetic number, because the mean of its divisors is an integer number (1439071962).

Almost surely, 2^2878143923 is an apocalyptic number.

2878143923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878143923 is an equidigital number, since it uses as much as digits as its factorization.

2878143923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 2878143923 is about 53648.3356964594. The cubic root of 2878143923 is about 1422.4516140831.

The spelling of 2878143923 in words is "two billion, eight hundred seventy-eight million, one hundred forty-three thousand, nine hundred twenty-three".