3685445863 has 8 divisors (see below), whose sum is σ = 4060294416. Its totient is φ = 3317232000.

The previous prime is 3685445783. The next prime is 3685445899.

3685445863 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685445863 is a prime.

It is a super-2 number, since 2×3685445863² = 27165022418207629538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3685445863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685445363) 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, 1657506 + ... + 1659727.

It is an arithmetic number, because the mean of its divisors is an integer number (507536802).

Almost surely, 2^3685445863 is an apocalyptic number.

3685445863 is a deficient number, since it is larger than the sum of its proper divisors (374848553).

3685445863 is a wasteful number, since it uses less digits than its factorization.

3685445863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317345.

The product of its digits is 8294400, while the sum is 52.

The square root of 3685445863 is about 60707.8731549706. The cubic root of 3685445863 is about 1544.6497270828.

The spelling of 3685445863 in words is "three billion, six hundred eighty-five million, four hundred forty-five thousand, eight hundred sixty-three".