3654194009 has 4 divisors (see below), whose sum is σ = 3658458804. Its totient is φ = 3649929216.

The previous prime is 3654193999. The next prime is 3654194029. The reversal of 3654194009 is 9004914563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9004914563 = 1319 ⋅6827077.

It can be written as a sum of positive squares in 2 ways, for example, as 3410209609 + 243984400 = 58397^2 + 15620^2 .

It is a cyclic number.

It is not a de Polignac number, because 3654194009 - 2⁴ = 3654193993 is a prime.

It is a super-2 number, since 2×3654194009² = 26706267710822984162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3654194029) 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, 2131112 + ... + 2132825.

It is an arithmetic number, because the mean of its divisors is an integer number (914614701).

Almost surely, 2^3654194009 is an apocalyptic number.

It is an amenable number.

3654194009 is a deficient number, since it is larger than the sum of its proper divisors (4264795).

3654194009 is an equidigital number, since it uses as much as digits as its factorization.

3654194009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4264794.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 3654194009 is about 60449.9297683628. The cubic root of 3654194009 is about 1540.2712190271.

The spelling of 3654194009 in words is "three billion, six hundred fifty-four million, one hundred ninety-four thousand, nine".