3868400545 has 4 divisors (see below), whose sum is σ = 4642080660. Its totient is φ = 3094720432.

The previous prime is 3868400539. The next prime is 3868400573. The reversal of 3868400545 is 5450048683.

3868400545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 719956224 + 3148444321 = 26832^2 + 56111^2 .

It is a cyclic number.

It is not a de Polignac number, because 3868400545 - 2⁹ = 3868400033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386840050 + ... + 386840059.

It is an arithmetic number, because the mean of its divisors is an integer number (1160520165).

Almost surely, 2^3868400545 is an apocalyptic number.

It is an amenable number.

3868400545 is a deficient number, since it is larger than the sum of its proper divisors (773680115).

3868400545 is an equidigital number, since it uses as much as digits as its factorization.

3868400545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773680114.

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 3868400545 is about 62196.4673032159. The cubic root of 3868400545 is about 1569.7981463886.

The spelling of 3868400545 in words is "three billion, eight hundred sixty-eight million, four hundred thousand, five hundred forty-five".