3870485545 has 4 divisors (see below), whose sum is σ = 4644582660. Its totient is φ = 3096388432.

The previous prime is 3870485533. The next prime is 3870485587. The reversal of 3870485545 is 5455840783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5455840783 = 1951 ⋅2796433.

It can be written as a sum of positive squares in 2 ways, for example, as 2694544281 + 1175941264 = 51909^2 + 34292^2 .

It is a cyclic number.

It is not a de Polignac number, because 3870485545 - 2¹³ = 3870477353 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387048550 + ... + 387048559.

It is an arithmetic number, because the mean of its divisors is an integer number (1161145665).

Almost surely, 2^3870485545 is an apocalyptic number.

It is an amenable number.

3870485545 is a deficient number, since it is larger than the sum of its proper divisors (774097115).

3870485545 is an equidigital number, since it uses as much as digits as its factorization.

3870485545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774097114.

The product of its (nonzero) digits is 2688000, while the sum is 49.

The square root of 3870485545 is about 62213.2264474364. The cubic root of 3870485545 is about 1570.0801269503.

The spelling of 3870485545 in words is "three billion, eight hundred seventy million, four hundred eighty-five thousand, five hundred forty-five".