3870406745 has 24 divisors (see below), whose sum is σ = 4946257224. Its totient is φ = 2897330688.

The previous prime is 3870406733. The next prime is 3870406747. The reversal of 3870406745 is 5476040783.

It can be written as a sum of positive squares in 4 ways, for example, as 147088384 + 3723318361 = 12128^2 + 61019^2 .

It is not a de Polignac number, because 3870406745 - 2⁶ = 3870406681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3870406696 and 3870406705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870406747) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10211966 + ... + 10212344.

It is an arithmetic number, because the mean of its divisors is an integer number (206094051).

Almost surely, 2^3870406745 is an apocalyptic number.

It is an amenable number.

3870406745 is a deficient number, since it is larger than the sum of its proper divisors (1075850479).

3870406745 is an equidigital number, since it uses as much as digits as its factorization.

3870406745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The square root of 3870406745 is about 62212.5931383671. The cubic root of 3870406745 is about 1570.0694716848.

The spelling of 3870406745 in words is "three billion, eight hundred seventy million, four hundred six thousand, seven hundred forty-five".