1205523349 has 2 divisors, whose sum is σ = 1205523350. Its totient is φ = 1205523348.

The previous prime is 1205523337. The next prime is 1205523373. The reversal of 1205523349 is 9433255021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701296324 + 504227025 = 26482^2 + 22455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205523349 - 2¹¹ = 1205521301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205523149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602761674 + 602761675.

It is an arithmetic number, because the mean of its divisors is an integer number (602761675).

Almost surely, 2^1205523349 is an apocalyptic number.

It is an amenable number.

1205523349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205523349 is an equidigital number, since it uses as much as digits as its factorization.

1205523349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1205523349 is about 34720.6473009937. The cubic root of 1205523349 is about 1064.2864724724.

The spelling of 1205523349 in words is "one billion, two hundred five million, five hundred twenty-three thousand, three hundred forty-nine".