3865031400473 has 4 divisors (see below), whose sum is σ = 3866149434420. Its totient is φ = 3863913366528.

The previous prime is 3865031400469. The next prime is 3865031400487. The reversal of 3865031400473 is 3740041305683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 728919797824 + 3136111602649 = 853768^2 + 1770907^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865031400473 - 2² = 3865031400469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3865031408473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559011788 + ... + 559018701.

It is an arithmetic number, because the mean of its divisors is an integer number (966537358605).

Almost surely, 2^{3865031400473} is an apocalyptic number.

It is an amenable number.

3865031400473 is a deficient number, since it is larger than the sum of its proper divisors (1118033947).

3865031400473 is a wasteful number, since it uses less digits than its factorization.

3865031400473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118033946.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 3865031400473 in words is "three trillion, eight hundred sixty-five billion, thirty-one million, four hundred thousand, four hundred seventy-three".