1155234013 has 8 divisors (see below), whose sum is σ = 1167824448. Its totient is φ = 1142657664.

The previous prime is 1155234007. The next prime is 1155234019. The reversal of 1155234013 is 3104325511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1155234007) and next prime (1155234019).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155234013 - 2⁹ = 1155233501 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 (1155234019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297120 + ... + 300982.

It is an arithmetic number, because the mean of its divisors is an integer number (145978056).

Almost surely, 2^1155234013 is an apocalyptic number.

It is an amenable number.

1155234013 is a deficient number, since it is larger than the sum of its proper divisors (12590435).

1155234013 is an equidigital number, since it uses as much as digits as its factorization.

1155234013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7043.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1155234013 is about 33988.7336186566. The cubic root of 1155234013 is about 1049.2766031668.

Adding to 1155234013 its reverse (3104325511), we get a palindrome (4259559524).

The spelling of 1155234013 in words is "one billion, one hundred fifty-five million, two hundred thirty-four thousand, thirteen".