3685217018 has 16 divisors (see below), whose sum is σ = 6378852480. Its totient is φ = 1564044336.

The previous prime is 3685217017. The next prime is 3685217027. The reversal of 3685217018 is 8107125863.

It is not an unprimeable number, because it can be changed into a prime (3685217017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276373 + ... + 1279256.

It is an arithmetic number, because the mean of its divisors is an integer number (398678280).

Almost surely, 2^3685217018 is an apocalyptic number.

3685217018 is a deficient number, since it is larger than the sum of its proper divisors (2693635462).

3685217018 is a wasteful number, since it uses less digits than its factorization.

3685217018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555741.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 3685217018 is about 60705.9883207579. The cubic root of 3685217018 is about 1544.6177551318.

The spelling of 3685217018 in words is "three billion, six hundred eighty-five million, two hundred seventeen thousand, eighteen".