3641428665 has 24 divisors (see below), whose sum is σ = 7213497408. Its totient is φ = 1664652960.

The previous prime is 3641428663. The next prime is 3641428669. The reversal of 3641428665 is 5668241463.

3641428665 is a `hidden beast` number, since 364 + 1 + 4 + 286 + 6 + 5 = 666.

It is not a de Polignac number, because 3641428665 - 2¹ = 3641428663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3641428665.

It is not an unprimeable number, because it can be changed into a prime (3641428663) 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 23 ways as a sum of consecutive naturals, for example, 5779731 + ... + 5780360.

It is an arithmetic number, because the mean of its divisors is an integer number (300562392).

Almost surely, 2^3641428665 is an apocalyptic number.

3641428665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3641428665 is a deficient number, since it is larger than the sum of its proper divisors (3572068743).

3641428665 is a wasteful number, since it uses less digits than its factorization.

3641428665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560109 (or 11560106 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 3641428665 is about 60344.2513003517. The cubic root of 3641428665 is about 1538.4755625007.

The spelling of 3641428665 in words is "three billion, six hundred forty-one million, four hundred twenty-eight thousand, six hundred sixty-five".