1155323029 has 6 divisors (see below), whose sum is σ = 1343947254. Its totient is φ = 990276840.

The previous prime is 1155323003. The next prime is 1155323053. The reversal of 1155323029 is 9203235511.

It can be written as a sum of positive squares in only one way, i.e., 747202225 + 408120804 = 27335^2 + 20202^2 .

It is not a de Polignac number, because 1155323029 - 2⁹ = 1155322517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155323089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11788962 + ... + 11789059.

It is an arithmetic number, because the mean of its divisors is an integer number (223991209).

Almost surely, 2^1155323029 is an apocalyptic number.

It is an amenable number.

1155323029 is a deficient number, since it is larger than the sum of its proper divisors (188624225).

1155323029 is an equidigital number, since it uses as much as digits as its factorization.

1155323029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23578035 (or 23578028 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1155323029 is about 33990.0430861745. The cubic root of 1155323029 is about 1049.3035529756.

The spelling of 1155323029 in words is "one billion, one hundred fifty-five million, three hundred twenty-three thousand, twenty-nine".