3645134737 has 4 divisors (see below), whose sum is σ = 3803618880. Its totient is φ = 3486650596.

The previous prime is 3645134723. The next prime is 3645134771. The reversal of 3645134737 is 7374315463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7374315463 = 47 ⋅156900329.

It is a cyclic number.

It is not a de Polignac number, because 3645134737 - 2⁷ = 3645134609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3645134693 and 3645134702.

It is not an unprimeable number, because it can be changed into a prime (3645134707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79242037 + ... + 79242082.

It is an arithmetic number, because the mean of its divisors is an integer number (950904720).

Almost surely, 2^3645134737 is an apocalyptic number.

It is an amenable number.

3645134737 is a deficient number, since it is larger than the sum of its proper divisors (158484143).

3645134737 is a wasteful number, since it uses less digits than its factorization.

3645134737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158484142.

The product of its digits is 635040, while the sum is 43.

The square root of 3645134737 is about 60374.9512380755. The cubic root of 3645134737 is about 1538.9973144938.

The spelling of 3645134737 in words is "three billion, six hundred forty-five million, one hundred thirty-four thousand, seven hundred thirty-seven".