3645734418 has 24 divisors (see below), whose sum is σ = 8028586956. Its totient is φ = 1195322400.

The previous prime is 3645734381. The next prime is 3645734429. The reversal of 3645734418 is 8144375463.

3645734418 is a `hidden beast` number, since 3 + 64 + 573 + 4 + 4 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3282946209 + 362788209 = 57297^2 + 19047^2 .

It is a super-3 number, since 3×3645734418³ (a number of 30 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1659073 + ... + 1661268.

Almost surely, 2^3645734418 is an apocalyptic number.

3645734418 is an abundant number, since it is smaller than the sum of its proper divisors (4382852538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645734418 is a wasteful number, since it uses less digits than its factorization.

3645734418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320410 (or 3320407 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 3645734418 is about 60379.9173401223. The cubic root of 3645734418 is about 1539.0817061473.

The spelling of 3645734418 in words is "three billion, six hundred forty-five million, seven hundred thirty-four thousand, four hundred eighteen".