3665243457 has 12 divisors (see below), whose sum is σ = 5303176164. Its totient is φ = 2439371520.

The previous prime is 3665243443. The next prime is 3665243513. The reversal of 3665243457 is 7543425663.

3665243457 is a `hidden beast` number, since 366 + 5 + 243 + 45 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1812715776 + 1852527681 = 42576^2 + 43041^2 .

It is not a de Polignac number, because 3665243457 - 2¹⁴ = 3665227073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665043457) 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 11 ways as a sum of consecutive naturals, for example, 338044 + ... + 348717.

It is an arithmetic number, because the mean of its divisors is an integer number (441931347).

Almost surely, 2^3665243457 is an apocalyptic number.

It is an amenable number.

3665243457 is a deficient number, since it is larger than the sum of its proper divisors (1637932707).

3665243457 is a wasteful number, since it uses less digits than its factorization.

3665243457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687360 (or 687357 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

The square root of 3665243457 is about 60541.2541743231. The cubic root of 3665243457 is about 1541.8221329863.

The spelling of 3665243457 in words is "three billion, six hundred sixty-five million, two hundred forty-three thousand, four hundred fifty-seven".