3661091742 has 48 divisors (see below), whose sum is σ = 9291981312. Its totient is φ = 950932080.

The previous prime is 3661091699. The next prime is 3661091771. The reversal of 3661091742 is 2471901663.

It is a self number, because there is not a number n which added to its sum of digits gives 3661091742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562798 + ... + 569265.

It is an arithmetic number, because the mean of its divisors is an integer number (193582944).

Almost surely, 2^3661091742 is an apocalyptic number.

3661091742 is an abundant number, since it is smaller than the sum of its proper divisors (5630889570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3661091742 is a wasteful number, since it uses less digits than its factorization.

3661091742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132093 (or 1132086 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 3661091742 is about 60506.9561455540. The cubic root of 3661091742 is about 1541.2397592540.

The spelling of 3661091742 in words is "three billion, six hundred sixty-one million, ninety-one thousand, seven hundred forty-two".