1155020329 has 2 divisors, whose sum is σ = 1155020330. Its totient is φ = 1155020328.

The previous prime is 1155020311. The next prime is 1155020411. The reversal of 1155020329 is 9230205511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1103568400 + 51451929 = 33220^2 + 7173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155020329 - 2⁵ = 1155020297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155020297 and 1155020306.

It is not a weakly prime, because it can be changed into another prime (1155020309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577510164 + 577510165.

It is an arithmetic number, because the mean of its divisors is an integer number (577510165).

Almost surely, 2^1155020329 is an apocalyptic number.

It is an amenable number.

1155020329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155020329 is an equidigital number, since it uses as much as digits as its factorization.

1155020329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1155020329 is about 33985.5900198893. The cubic root of 1155020329 is about 1049.2119041693.

The spelling of 1155020329 in words is "one billion, one hundred fifty-five million, twenty thousand, three hundred twenty-nine".