3661317998 has 24 divisors (see below), whose sum is σ = 5944478904. Its totient is φ = 1681298640.

The previous prime is 3661317937. The next prime is 3661318019. The reversal of 3661317998 is 8997131663.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1155965 + ... + 1159127.

It is an arithmetic number, because the mean of its divisors is an integer number (247686621).

Almost surely, 2^3661317998 is an apocalyptic number.

3661317998 is a deficient number, since it is larger than the sum of its proper divisors (2283160906).

3661317998 is a wasteful number, since it uses less digits than its factorization.

3661317998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3389 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 53.

The square root of 3661317998 is about 60508.8257859959. The cubic root of 3661317998 is about 1541.2715082135.

The spelling of 3661317998 in words is "three billion, six hundred sixty-one million, three hundred seventeen thousand, nine hundred ninety-eight".