3906217918 has 16 divisors (see below), whose sum is σ = 5884363584. Its totient is φ = 1944777760.

The previous prime is 3906217907. The next prime is 3906217957. The reversal of 3906217918 is 8197126093.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669771 + ... + 675577.

It is an arithmetic number, because the mean of its divisors is an integer number (367772724).

Almost surely, 2^3906217918 is an apocalyptic number.

3906217918 is a deficient number, since it is larger than the sum of its proper divisors (1978145666).

3906217918 is a wasteful number, since it uses less digits than its factorization.

3906217918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7187.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 3906217918 is about 62499.7433434730. The cubic root of 3906217918 is about 1574.8970008062.

The spelling of 3906217918 in words is "three billion, nine hundred six million, two hundred seventeen thousand, nine hundred eighteen".