3745640605 has 16 divisors (see below), whose sum is σ = 5241715200. Its totient is φ = 2568438096.

The previous prime is 3745640581. The next prime is 3745640623. The reversal of 3745640605 is 5060465473.

It is not a de Polignac number, because 3745640605 - 2¹¹ = 3745638557 is a prime.

It is a super-3 number, since 3×3745640605³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090309 + ... + 1093738.

It is an arithmetic number, because the mean of its divisors is an integer number (327607200).

Almost surely, 2^3745640605 is an apocalyptic number.

3745640605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3745640605 is a deficient number, since it is larger than the sum of its proper divisors (1496074595).

3745640605 is an equidigital number, since it uses as much as digits as its factorization.

3745640605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184073 (or 2184059 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 3745640605 is about 61201.6389077940. The cubic root of 3745640605 is about 1553.0139904788.

The spelling of 3745640605 in words is "three billion, seven hundred forty-five million, six hundred forty thousand, six hundred five".