3645341220 has 24 divisors (see below), whose sum is σ = 10206955584. Its totient is φ = 972090976.

The previous prime is 3645341179. The next prime is 3645341221. The reversal of 3645341220 is 221435463.

It is a super-2 number, since 2×3645341220² = 26577025220462176800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (3645341221) 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 7 ways as a sum of consecutive naturals, for example, 30377784 + ... + 30377903.

It is an arithmetic number, because the mean of its divisors is an integer number (425289816).

Almost surely, 2^3645341220 is an apocalyptic number.

3645341220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3645341220 is an abundant number, since it is smaller than the sum of its proper divisors (6561614364).

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

3645341220 is a wasteful number, since it uses less digits than its factorization.

3645341220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60755699 (or 60755697 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 3645341220 is about 60376.6612193818. The cubic root of 3645341220 is about 1539.0263733906.

Adding to 3645341220 its reverse (221435463), we get a palindrome (3866776683).

It can be divided in two parts, 3645 and 341220, that added together give a triangular number (344865 = T₈₃₀).

The spelling of 3645341220 in words is "three billion, six hundred forty-five million, three hundred forty-one thousand, two hundred twenty".