2169738427 has 2 divisors, whose sum is σ = 2169738428. Its totient is φ = 2169738426.

The previous prime is 2169738353. The next prime is 2169738481. The reversal of 2169738427 is 7248379612.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2169738427 - 2²³ = 2161349819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2169738227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084869213 + 1084869214.

It is an arithmetic number, because the mean of its divisors is an integer number (1084869214).

Almost surely, 2^2169738427 is an apocalyptic number.

2169738427 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169738427 is an equidigital number, since it uses as much as digits as its factorization.

2169738427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 2169738427 is about 46580.4511249086. The cubic root of 2169738427 is about 1294.6005689104.

The spelling of 2169738427 in words is "two billion, one hundred sixty-nine million, seven hundred thirty-eight thousand, four hundred twenty-seven".