1366654445 has 16 divisors (see below), whose sum is σ = 1767953712. Its totient is φ = 1008184320.

The previous prime is 1366654427. The next prime is 1366654447. The reversal of 1366654445 is 5444566631.

It can be written as a sum of positive squares in 8 ways, for example, as 9616201 + 1357038244 = 3101^2 + 36838^2 .

It is not a de Polignac number, because 1366654445 - 2²⁴ = 1349877229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1366654396 and 1366654405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366654447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56069 + ... + 76661.

It is an arithmetic number, because the mean of its divisors is an integer number (110497107).

Almost surely, 2^1366654445 is an apocalyptic number.

It is an amenable number.

1366654445 is a deficient number, since it is larger than the sum of its proper divisors (401299267).

1366654445 is a wasteful number, since it uses less digits than its factorization.

1366654445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21632.

The product of its digits is 1036800, while the sum is 44.

The square root of 1366654445 is about 36968.2897224094. The cubic root of 1366654445 is about 1109.7357391099.

The spelling of 1366654445 in words is "one billion, three hundred sixty-six million, six hundred fifty-four thousand, four hundred forty-five".