3645136037 has 4 divisors (see below), whose sum is σ = 3734041836. Its totient is φ = 3556230240.

The previous prime is 3645136021. The next prime is 3645136043. The reversal of 3645136037 is 7306315463.

It is a happy number.

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 243796996 + 3401339041 = 15614^2 + 58321^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645136037 - 2⁴ = 3645136021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645136337) 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, 44452838 + ... + 44452919.

It is an arithmetic number, because the mean of its divisors is an integer number (933510459).

Almost surely, 2^3645136037 is an apocalyptic number.

It is an amenable number.

3645136037 is a deficient number, since it is larger than the sum of its proper divisors (88905799).

3645136037 is an equidigital number, since it uses as much as digits as its factorization.

3645136037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88905798.

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 3645136037 is about 60374.9620041288. The cubic root of 3645136037 is about 1538.9974974497.

The spelling of 3645136037 in words is "three billion, six hundred forty-five million, one hundred thirty-six thousand, thirty-seven".