1326144550 has 12 divisors (see below), whose sum is σ = 2466628956. Its totient is φ = 530457800.

The previous prime is 1326144503. The next prime is 1326144559. The reversal of 1326144550 is 554416231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326144559) 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, 13261396 + ... + 13261495.

It is an arithmetic number, because the mean of its divisors is an integer number (205552413).

Almost surely, 2^1326144550 is an apocalyptic number.

1326144550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1326144550 is a deficient number, since it is larger than the sum of its proper divisors (1140484406).

1326144550 is a wasteful number, since it uses less digits than its factorization.

1326144550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26522903 (or 26522898 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1326144550 is about 36416.2676560902. The cubic root of 1326144550 is about 1098.6607806678.

The spelling of 1326144550 in words is "one billion, three hundred twenty-six million, one hundred forty-four thousand, five hundred fifty".