3646626140 has 24 divisors (see below), whose sum is σ = 8108381232. Its totient is φ = 1372847360.

The previous prime is 3646626097. The next prime is 3646626143. The reversal of 3646626140 is 416266463.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3646626094 and 3646626103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646626143) 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, 5362346 + ... + 5363025.

It is an arithmetic number, because the mean of its divisors is an integer number (337849218).

Almost surely, 2^3646626140 is an apocalyptic number.

It is an amenable number.

3646626140 is an abundant number, since it is smaller than the sum of its proper divisors (4461755092).

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

3646626140 is a wasteful number, since it uses less digits than its factorization.

3646626140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10725397 (or 10725395 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 3646626140 is about 60387.3011485031. The cubic root of 3646626140 is about 1539.2071789125.

The spelling of 3646626140 in words is "three billion, six hundred forty-six million, six hundred twenty-six thousand, one hundred forty".