2188396523 has 2 divisors, whose sum is σ = 2188396524. Its totient is φ = 2188396522.

The previous prime is 2188396501. The next prime is 2188396537. The reversal of 2188396523 is 3256938812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2188396523 - 2²² = 2184202219 is a prime.

It is not a weakly prime, because it can be changed into another prime (2188393523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094198261 + 1094198262.

It is an arithmetic number, because the mean of its divisors is an integer number (1094198262).

Almost surely, 2^2188396523 is an apocalyptic number.

2188396523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188396523 is an equidigital number, since it uses as much as digits as its factorization.

2188396523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 47.

The square root of 2188396523 is about 46780.3005868923. The cubic root of 2188396523 is about 1298.3008418275.

The spelling of 2188396523 in words is "two billion, one hundred eighty-eight million, three hundred ninety-six thousand, five hundred twenty-three".