3638486240 has 48 divisors (see below), whose sum is σ = 8657817840. Its totient is φ = 1444915200.

The previous prime is 3638486233. The next prime is 3638486249. The reversal of 3638486240 is 426848363.

It is a junction number, because it is equal to n+sod(n) for n = 3638486191 and 3638486200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638486249) 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, 59561 + ... + 104040.

It is an arithmetic number, because the mean of its divisors is an integer number (180371205).

Almost surely, 2^3638486240 is an apocalyptic number.

It is an amenable number.

3638486240 is an abundant number, since it is smaller than the sum of its proper divisors (5019331600).

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

3638486240 is a wasteful number, since it uses less digits than its factorization.

3638486240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163755 (or 163747 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 44.

The square root of 3638486240 is about 60319.8660475966. The cubic root of 3638486240 is about 1538.0610668714.

The spelling of 3638486240 in words is "three billion, six hundred thirty-eight million, four hundred eighty-six thousand, two hundred forty".