2659342381 has 2 divisors, whose sum is σ = 2659342382. Its totient is φ = 2659342380.

The previous prime is 2659342379. The next prime is 2659342457. The reversal of 2659342381 is 1832439562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2632613481 + 26728900 = 51309^2 + 5170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2659342381 - 2¹ = 2659342379 is a prime.

It is a super-2 number, since 2×2659342381² = 14144203798765498322, which contains 22 as substring.

Together with 2659342379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2659342321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329671190 + 1329671191.

It is an arithmetic number, because the mean of its divisors is an integer number (1329671191).

Almost surely, 2^2659342381 is an apocalyptic number.

It is an amenable number.

2659342381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2659342381 is an equidigital number, since it uses as much as digits as its factorization.

2659342381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The square root of 2659342381 is about 51568.8120960722. The cubic root of 2659342381 is about 1385.4517905548.

The spelling of 2659342381 in words is "two billion, six hundred fifty-nine million, three hundred forty-two thousand, three hundred eighty-one".