2119428878 has 8 divisors (see below), whose sum is σ = 3633306672. Its totient is φ = 908326656.

The previous prime is 2119428877. The next prime is 2119428887. The reversal of 2119428878 is 8788249112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119428877) 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, 75693875 + ... + 75693902.

It is an arithmetic number, because the mean of its divisors is an integer number (454163334).

Almost surely, 2^2119428878 is an apocalyptic number.

2119428878 is a deficient number, since it is larger than the sum of its proper divisors (1513877794).

2119428878 is a wasteful number, since it uses less digits than its factorization.

2119428878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151387786.

The product of its digits is 516096, while the sum is 50.

The square root of 2119428878 is about 46037.2553265288. The cubic root of 2119428878 is about 1284.5162886409.

The spelling of 2119428878 in words is "two billion, one hundred nineteen million, four hundred twenty-eight thousand, eight hundred seventy-eight".