3685641867 has 12 divisors (see below), whose sum is σ = 5348938504. Its totient is φ = 2445448320.

The previous prime is 3685641859. The next prime is 3685641881. The reversal of 3685641867 is 7681465863.

3685641867 is a `hidden beast` number, since 3 + 6 + 8 + 564 + 18 + 67 = 666.

It is not a de Polignac number, because 3685641867 - 2³ = 3685641859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3685641847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 968518 + ... + 972315.

Almost surely, 2^3685641867 is an apocalyptic number.

3685641867 is a deficient number, since it is larger than the sum of its proper divisors (1663296637).

3685641867 is a wasteful number, since it uses less digits than its factorization.

3685641867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941050 (or 1941047 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 3685641867 is about 60709.4874545981. The cubic root of 3685641867 is about 1544.6771097632.

The spelling of 3685641867 in words is "three billion, six hundred eighty-five million, six hundred forty-one thousand, eight hundred sixty-seven".