3671661906 has 32 divisors (see below), whose sum is σ = 8901000000. Its totient is φ = 1112624640.

The previous prime is 3671661893. The next prime is 3671661911. The reversal of 3671661906 is 6091661763.

It is a super-2 number, since 2×3671661906² = 26962202303943105672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090031 + ... + 3091218.

It is an arithmetic number, because the mean of its divisors is an integer number (278156250).

Almost surely, 2^3671661906 is an apocalyptic number.

3671661906 is an abundant number, since it is smaller than the sum of its proper divisors (5229338094).

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

3671661906 is a wasteful number, since it uses less digits than its factorization.

3671661906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181271 (or 6181265 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 3671661906 is about 60594.2398747604. The cubic root of 3671661906 is about 1542.7216035474.

The spelling of 3671661906 in words is "three billion, six hundred seventy-one million, six hundred sixty-one thousand, nine hundred six".