3640128290 has 16 divisors (see below), whose sum is σ = 6554580480. Its totient is φ = 1455529200.

The previous prime is 3640128287. The next prime is 3640128299. The reversal of 3640128290 is 928210463.

It is a self number, because there is not a number n which added to its sum of digits gives 3640128290.

It is not an unprimeable number, because it can be changed into a prime (3640128299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35330 + ... + 92349.

It is an arithmetic number, because the mean of its divisors is an integer number (409661280).

Almost surely, 2^3640128290 is an apocalyptic number.

3640128290 is a deficient number, since it is larger than the sum of its proper divisors (2914452190).

3640128290 is a wasteful number, since it uses less digits than its factorization.

3640128290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130537.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 3640128290 is about 60333.4756996479. The cubic root of 3640128290 is about 1538.2924078900.

The spelling of 3640128290 in words is "three billion, six hundred forty million, one hundred twenty-eight thousand, two hundred ninety".