3642556040 has 16 divisors (see below), whose sum is σ = 8195751180. Its totient is φ = 1457022400.

The previous prime is 3642556033. The next prime is 3642556061. The reversal of 3642556040 is 406552463.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3397257796 + 245298244 = 58286^2 + 15662^2 .

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 3 ways as a sum of consecutive naturals, for example, 45531911 + ... + 45531990.

Almost surely, 2^3642556040 is an apocalyptic number.

It is an amenable number.

3642556040 is an abundant number, since it is smaller than the sum of its proper divisors (4553195140).

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

3642556040 is a wasteful number, since it uses less digits than its factorization.

3642556040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91063912 (or 91063908 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 3642556040 is about 60353.5917738124. The cubic root of 3642556040 is about 1538.6343152033.

The spelling of 3642556040 in words is "three billion, six hundred forty-two million, five hundred fifty-six thousand, forty".