2042193878 has 4 divisors (see below), whose sum is σ = 3063290820. Its totient is φ = 1021096938.

The previous prime is 2042193877. The next prime is 2042193889. The reversal of 2042193878 is 8783912402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8783912402 = 2 ⋅4391956201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042193877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510548468 + ... + 510548471.

It is an arithmetic number, because the mean of its divisors is an integer number (765822705).

Almost surely, 2^2042193878 is an apocalyptic number.

2042193878 is a deficient number, since it is larger than the sum of its proper divisors (1021096942).

2042193878 is a wasteful number, since it uses less digits than its factorization.

2042193878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021096941.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 2042193878 is about 45190.6392740798. The cubic root of 2042193878 is about 1268.7196218211.

The spelling of 2042193878 in words is "two billion, forty-two million, one hundred ninety-three thousand, eight hundred seventy-eight".