1326236155 has 4 divisors (see below), whose sum is σ = 1591483392. Its totient is φ = 1060988920.

The previous prime is 1326236117. The next prime is 1326236159. The reversal of 1326236155 is 5516326231.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1326236155 - 2²³ = 1317847547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1326236155.

It is not an unprimeable number, because it can be changed into a prime (1326236159) 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 in 3 ways as a sum of consecutive naturals, for example, 132623611 + ... + 132623620.

It is an arithmetic number, because the mean of its divisors is an integer number (397870848).

Almost surely, 2^1326236155 is an apocalyptic number.

1326236155 is a deficient number, since it is larger than the sum of its proper divisors (265247237).

1326236155 is an equidigital number, since it uses as much as digits as its factorization.

1326236155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265247236.

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

The square root of 1326236155 is about 36417.5253827055. The cubic root of 1326236155 is about 1098.6860771821.

The spelling of 1326236155 in words is "one billion, three hundred twenty-six million, two hundred thirty-six thousand, one hundred fifty-five".