3640166215 has 32 divisors (see below), whose sum is σ = 5146343424. Its totient is φ = 2420056320.

The previous prime is 3640166209. The next prime is 3640166251. The reversal of 3640166215 is 5126610463.

It is not a de Polignac number, because 3640166215 - 2⁹ = 3640165703 is a prime.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 165675 + ... + 186355.

It is an arithmetic number, because the mean of its divisors is an integer number (160823232).

Almost surely, 2^3640166215 is an apocalyptic number.

3640166215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3640166215 is a deficient number, since it is larger than the sum of its proper divisors (1506177209).

3640166215 is a wasteful number, since it uses less digits than its factorization.

3640166215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20847.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 3640166215 is about 60333.7899936677. The cubic root of 3640166215 is about 1538.2977501502.

Adding to 3640166215 its reverse (5126610463), we get a palindrome (8766776678).

The spelling of 3640166215 in words is "three billion, six hundred forty million, one hundred sixty-six thousand, two hundred fifteen".