3665954029 has 4 divisors (see below), whose sum is σ = 3666142684. Its totient is φ = 3665765376.

The previous prime is 3665954021. The next prime is 3665954051. The reversal of 3665954029 is 9204595663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9204595663 = 241 ⋅38193343.

It can be written as a sum of positive squares in 2 ways, for example, as 2088672804 + 1577281225 = 45702^2 + 39715^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665954029 - 2³ = 3665954021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665954021) 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, 61332 + ... + 105325.

It is an arithmetic number, because the mean of its divisors is an integer number (916535671).

Almost surely, 2^3665954029 is an apocalyptic number.

It is an amenable number.

3665954029 is a deficient number, since it is larger than the sum of its proper divisors (188655).

3665954029 is a wasteful number, since it uses less digits than its factorization.

3665954029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188654.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The square root of 3665954029 is about 60547.1223841398. The cubic root of 3665954029 is about 1541.9217630071.

The spelling of 3665954029 in words is "three billion, six hundred sixty-five million, nine hundred fifty-four thousand, twenty-nine".