2123389788 has 24 divisors (see below), whose sum is σ = 5335697808. Its totient is φ = 653350656.

The previous prime is 2123389787. The next prime is 2123389789. The reversal of 2123389788 is 8879833212.

It is an interprime number because it is at equal distance from previous prime (2123389787) and next prime (2123389789).

It is a self number, because there is not a number n which added to its sum of digits gives 2123389788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123389787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6805581 + ... + 6805892.

It is an arithmetic number, because the mean of its divisors is an integer number (222320742).

Almost surely, 2^2123389788 is an apocalyptic number.

It is an amenable number.

2123389788 is an abundant number, since it is smaller than the sum of its proper divisors (3212308020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123389788 is a wasteful number, since it uses less digits than its factorization.

2123389788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13611493 (or 13611491 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 2123389788 is about 46080.2537753429. The cubic root of 2123389788 is about 1285.3159831972.

The spelling of 2123389788 in words is "two billion, one hundred twenty-three million, three hundred eighty-nine thousand, seven hundred eighty-eight".