1366261244 has 12 divisors (see below), whose sum is σ = 2401491624. Its totient is φ = 680120784.

The previous prime is 1366261243. The next prime is 1366261277. The reversal of 1366261244 is 4421626631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366261243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751439 + ... + 753254.

It is an arithmetic number, because the mean of its divisors is an integer number (200124302).

Almost surely, 2^1366261244 is an apocalyptic number.

It is an amenable number.

1366261244 is a deficient number, since it is larger than the sum of its proper divisors (1035230380).

1366261244 is a wasteful number, since it uses less digits than its factorization.

1366261244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504924 (or 1504922 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 1366261244 is about 36962.9712550276. The cubic root of 1366261244 is about 1109.6293013150.

Adding to 1366261244 its reverse (4421626631), we get a palindrome (5787887875).

The spelling of 1366261244 in words is "one billion, three hundred sixty-six million, two hundred sixty-one thousand, two hundred forty-four".