3806812471618 has 16 divisors (see below), whose sum is σ = 6149788711416. Its totient is φ = 1756898254080.

The previous prime is 3806812471607. The next prime is 3806812471663. The reversal of 3806812471618 is 8161742186083.

It can be written as a sum of positive squares in 4 ways, for example, as 2328441001929 + 1478371469689 = 1525923^2 + 1215883^2 .

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, 3331521 + ... + 4325812.

Almost surely, 2^{3806812471618} is an apocalyptic number.

3806812471618 is a deficient number, since it is larger than the sum of its proper divisors (2342976239798).

3806812471618 is a wasteful number, since it uses less digits than its factorization.

3806812471618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676469.

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 3806812471618 in words is "three trillion, eight hundred six billion, eight hundred twelve million, four hundred seventy-one thousand, six hundred eighteen".