3945037345 has 4 divisors (see below), whose sum is σ = 4734044820. Its totient is φ = 3156029872.

The previous prime is 3945037331. The next prime is 3945037373. The reversal of 3945037345 is 5437305493.

It is a happy number.

3945037345 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 1386296289 + 2558741056 = 37233^2 + 50584^2 .

It is a cyclic number.

It is not a de Polignac number, because 3945037345 - 2³¹ = 1797553697 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, 394503730 + ... + 394503739.

It is an arithmetic number, because the mean of its divisors is an integer number (1183511205).

Almost surely, 2^3945037345 is an apocalyptic number.

It is an amenable number.

3945037345 is a deficient number, since it is larger than the sum of its proper divisors (789007475).

3945037345 is an equidigital number, since it uses as much as digits as its factorization.

3945037345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789007474.

The product of its (nonzero) digits is 680400, while the sum is 43.

The square root of 3945037345 is about 62809.5322781503. The cubic root of 3945037345 is about 1580.0968461974.

The spelling of 3945037345 in words is "three billion, nine hundred forty-five million, thirty-seven thousand, three hundred forty-five".