3745407645 has 24 divisors (see below), whose sum is σ = 7419474816. Its totient is φ = 1712186208.

The previous prime is 3745407641. The next prime is 3745407647. The reversal of 3745407645 is 5467045473.

3745407645 is a `hidden beast` number, since 37 + 4 + 540 + 76 + 4 + 5 = 666.

It is not a de Polignac number, because 3745407645 - 2² = 3745407641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3745407645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3745407641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5944777 + ... + 5945406.

It is an arithmetic number, because the mean of its divisors is an integer number (309144784).

Almost surely, 2^3745407645 is an apocalyptic number.

3745407645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3745407645 is a deficient number, since it is larger than the sum of its proper divisors (3674067171).

3745407645 is a wasteful number, since it uses less digits than its factorization.

3745407645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11890201 (or 11890198 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 45.

The square root of 3745407645 is about 61199.7356611938. The cubic root of 3745407645 is about 1552.9817932591.

The spelling of 3745407645 in words is "three billion, seven hundred forty-five million, four hundred seven thousand, six hundred forty-five".