3645133465 has 8 divisors (see below), whose sum is σ = 4377122568. Its totient is φ = 2914131840.

The previous prime is 3645133439. The next prime is 3645133469. The reversal of 3645133465 is 5643315463.

It can be written as a sum of positive squares in 4 ways, for example, as 246709849 + 3398423616 = 15707^2 + 58296^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3645133465 - 2¹¹ = 3645131417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645133469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238722 + ... + 253531.

It is an arithmetic number, because the mean of its divisors is an integer number (547140321).

Almost surely, 2^3645133465 is an apocalyptic number.

It is an amenable number.

3645133465 is a deficient number, since it is larger than the sum of its proper divisors (731989103).

3645133465 is a wasteful number, since it uses less digits than its factorization.

3645133465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493739.

The product of its digits is 388800, while the sum is 40.

The square root of 3645133465 is about 60374.9407039046. The cubic root of 3645133465 is about 1538.9971354785.

The spelling of 3645133465 in words is "three billion, six hundred forty-five million, one hundred thirty-three thousand, four hundred sixty-five".