2188904923 has 2 divisors, whose sum is σ = 2188904924. Its totient is φ = 2188904922.

The previous prime is 2188904911. The next prime is 2188904933. The reversal of 2188904923 is 3294098812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188904923 - 2²⁹ = 1652034011 is a prime.

It is a super-3 number, since 3×2188904923³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2188904933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094452461 + 1094452462.

It is an arithmetic number, because the mean of its divisors is an integer number (1094452462).

Almost surely, 2^2188904923 is an apocalyptic number.

2188904923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188904923 is an equidigital number, since it uses as much as digits as its factorization.

2188904923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 2188904923 is about 46785.7341825476. The cubic root of 2188904923 is about 1298.4013728227.

The spelling of 2188904923 in words is "two billion, one hundred eighty-eight million, nine hundred four thousand, nine hundred twenty-three".