2188331379 has 12 divisors (see below), whose sum is σ = 3404071216. Its totient is φ = 1346665392.

The previous prime is 2188331371. The next prime is 2188331401. The reversal of 2188331379 is 9731338812.

It is a happy number.

2188331379 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2188331379 - 2³ = 2188331371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2188331371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9351727 + ... + 9351960.

Almost surely, 2^2188331379 is an apocalyptic number.

2188331379 is a deficient number, since it is larger than the sum of its proper divisors (1215739837).

2188331379 is a wasteful number, since it uses less digits than its factorization.

2188331379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703706 (or 18703703 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2188331379 is about 46779.6043057228. The cubic root of 2188331379 is about 1298.2879591303.

The spelling of 2188331379 in words is "two billion, one hundred eighty-eight million, three hundred thirty-one thousand, three hundred seventy-nine".