1366261001 has 16 divisors (see below), whose sum is σ = 1637776896. Its totient is φ = 1115176896.

The previous prime is 1366260989. The next prime is 1366261007. The reversal of 1366261001 is 1001626631.

It is not a de Polignac number, because 1366261001 - 2⁶ = 1366260937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366261007) 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 15 ways as a sum of consecutive naturals, for example, 43946 + ... + 68291.

It is an arithmetic number, because the mean of its divisors is an integer number (102361056).

Almost surely, 2^1366261001 is an apocalyptic number.

It is an amenable number.

1366261001 is a deficient number, since it is larger than the sum of its proper divisors (271515895).

1366261001 is a wasteful number, since it uses less digits than its factorization.

1366261001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112328.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1366261001 is about 36962.9679679541. The cubic root of 1366261001 is about 1109.6292355296.

Adding to 1366261001 its reverse (1001626631), we get a palindrome (2367887632).

The spelling of 1366261001 in words is "one billion, three hundred sixty-six million, two hundred sixty-one thousand, one".