1205535151 has 2 divisors, whose sum is σ = 1205535152. Its totient is φ = 1205535150.

The previous prime is 1205535137. The next prime is 1205535167. The reversal of 1205535151 is 1515355021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205535151 - 2²³ = 1197146543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205515151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602767575 + 602767576.

It is an arithmetic number, because the mean of its divisors is an integer number (602767576).

Almost surely, 2^1205535151 is an apocalyptic number.

1205535151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205535151 is an equidigital number, since it uses as much as digits as its factorization.

1205535151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1205535151 is about 34720.8172570866. The cubic root of 1205535151 is about 1064.2899455609.

The spelling of 1205535151 in words is "one billion, two hundred five million, five hundred thirty-five thousand, one hundred fifty-one".