3645140787 has 24 divisors (see below), whose sum is σ = 5332321904. Its totient is φ = 2399238144.

The previous prime is 3645140783. The next prime is 3645140881. The reversal of 3645140787 is 7870415463.

3645140787 is a `hidden beast` number, since 3 + 64 + 514 + 0 + 78 + 7 = 666.

It is not a de Polignac number, because 3645140787 - 2² = 3645140783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645140783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373188 + ... + 382830.

Almost surely, 2^3645140787 is an apocalyptic number.

3645140787 is a deficient number, since it is larger than the sum of its proper divisors (1687181117).

3645140787 is a wasteful number, since it uses less digits than its factorization.

3645140787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10179 (or 10176 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 3645140787 is about 60375.0013416149. The cubic root of 3645140787 is about 1538.9981659419.

The spelling of 3645140787 in words is "three billion, six hundred forty-five million, one hundred forty thousand, seven hundred eighty-seven".