3661740043 has 4 divisors (see below), whose sum is σ = 3943412368. Its totient is φ = 3380067720.

The previous prime is 3661740011. The next prime is 3661740067. The reversal of 3661740043 is 3400471663.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3661740043 - 2⁵ = 3661740011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3661739990 and 3661740008.

It is not an unprimeable number, because it can be changed into a prime (3661740443) 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, 140836143 + ... + 140836168.

It is an arithmetic number, because the mean of its divisors is an integer number (985853092).

Almost surely, 2^3661740043 is an apocalyptic number.

3661740043 is a deficient number, since it is larger than the sum of its proper divisors (281672325).

3661740043 is a wasteful number, since it uses less digits than its factorization.

3661740043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281672324.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 3661740043 is about 60512.3131519528. The cubic root of 3661740043 is about 1541.3307274110.

The spelling of 3661740043 in words is "three billion, six hundred sixty-one million, seven hundred forty thousand, forty-three".