1663214045 has 4 divisors (see below), whose sum is σ = 1995856860. Its totient is φ = 1330571232.

The previous prime is 1663214029. The next prime is 1663214081. The reversal of 1663214045 is 5404123661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5404123661 = 769 ⋅7027469.

It can be written as a sum of positive squares in 2 ways, for example, as 301751641 + 1361462404 = 17371^2 + 36898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1663214045 - 2⁴ = 1663214029 is a prime.

It is a congruent number.

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, 166321400 + ... + 166321409.

It is an arithmetic number, because the mean of its divisors is an integer number (498964215).

Almost surely, 2^1663214045 is an apocalyptic number.

It is an amenable number.

1663214045 is a deficient number, since it is larger than the sum of its proper divisors (332642815).

1663214045 is an equidigital number, since it uses as much as digits as its factorization.

1663214045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332642814.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1663214045 is about 40782.5213173487. The cubic root of 1663214045 is about 1184.8118283820.

The spelling of 1663214045 in words is "one billion, six hundred sixty-three million, two hundred fourteen thousand, forty-five".