1209361144 has 16 divisors (see below), whose sum is σ = 2269911600. Its totient is φ = 604051392.

The previous prime is 1209361121. The next prime is 1209361157. The reversal of 1209361144 is 4411639021.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 70429 + ... + 85900.

It is an arithmetic number, because the mean of its divisors is an integer number (141869475).

Almost surely, 2^1209361144 is an apocalyptic number.

It is an amenable number.

1209361144 is a deficient number, since it is larger than the sum of its proper divisors (1060550456).

1209361144 is a wasteful number, since it uses less digits than its factorization.

1209361144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157302 (or 157298 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1209361144 is about 34775.8701400842. The cubic root of 1209361144 is about 1065.4146648029.

It can be divided in two parts, 12093 and 61144, that added together give a palindrome (73237).

The spelling of 1209361144 in words is "one billion, two hundred nine million, three hundred sixty-one thousand, one hundred forty-four".