3645133371 has 12 divisors (see below), whose sum is σ = 5743846680. Its totient is φ = 2209171680.

The previous prime is 3645133351. The next prime is 3645133409. The reversal of 3645133371 is 1733315463.

3645133371 is a `hidden beast` number, since 3 + 645 + 1 + 3 + 3 + 3 + 7 + 1 = 666.

It is not a de Polignac number, because 3645133371 - 2⁶ = 3645133307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3645133301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18409666 + ... + 18409863.

It is an arithmetic number, because the mean of its divisors is an integer number (478653890).

Almost surely, 2^3645133371 is an apocalyptic number.

3645133371 is a deficient number, since it is larger than the sum of its proper divisors (2098713309).

3645133371 is a wasteful number, since it uses less digits than its factorization.

3645133371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36819546 (or 36819543 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 3645133371 is about 60374.9399254360. The cubic root of 3645133371 is about 1538.9971222494.

The spelling of 3645133371 in words is "three billion, six hundred forty-five million, one hundred thirty-three thousand, three hundred seventy-one".