1213544002 has 8 divisors (see below), whose sum is σ = 1985799312. Its totient is φ = 551610900.

The previous prime is 1213543957. The next prime is 1213544027. The reversal of 1213544002 is 2004453121.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 55161091 = 1213544002 / (1 + 2 + 1 + 3 + 5 + 4 + 4 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27580524 + ... + 27580567.

It is an arithmetic number, because the mean of its divisors is an integer number (248224914).

Almost surely, 2^1213544002 is an apocalyptic number.

1213544002 is a deficient number, since it is larger than the sum of its proper divisors (772255310).

1213544002 is a wasteful number, since it uses less digits than its factorization.

1213544002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55161104.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1213544002 is about 34835.9584624853. The cubic root of 1213544002 is about 1066.6415798570.

Adding to 1213544002 its reverse (2004453121), we get a palindrome (3217997123).

The spelling of 1213544002 in words is "one billion, two hundred thirteen million, five hundred forty-four thousand, two".