3640182020 has 24 divisors (see below), whose sum is σ = 7645654464. Its totient is φ = 1455830496.

The previous prime is 3640182017. The next prime is 3640182023. The reversal of 3640182020 is 202810463.

It is an interprime number because it is at equal distance from previous prime (3640182017) and next prime (3640182023).

It is not an unprimeable number, because it can be changed into a prime (3640182023) 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, 154247 + ... + 176273.

It is an arithmetic number, because the mean of its divisors is an integer number (318568936).

Almost surely, 2^3640182020 is an apocalyptic number.

It is an amenable number.

3640182020 is an abundant number, since it is smaller than the sum of its proper divisors (4005472444).

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

3640182020 is a wasteful number, since it uses less digits than its factorization.

3640182020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30299 (or 30297 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 3640182020 is about 60333.9209731972. The cubic root of 3640182020 is about 1538.2999764918.

Adding to 3640182020 its reverse (202810463), we get a palindrome (3842992483).

The spelling of 3640182020 in words is "three billion, six hundred forty million, one hundred eighty-two thousand, twenty".