3619446820638 has 64 divisors (see below), whose sum is σ = 8182347321600. Its totient is φ = 1057868514560.

The previous prime is 3619446820637. The next prime is 3619446820663. The reversal of 3619446820638 is 8360286449163.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3619446820637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8562423 + ... + 8975186.

It is an arithmetic number, because the mean of its divisors is an integer number (127849176900).

Almost surely, 2^{3619446820638} is an apocalyptic number.

3619446820638 is an abundant number, since it is smaller than the sum of its proper divisors (4562900500962).

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

3619446820638 is a wasteful number, since it uses less digits than its factorization.

3619446820638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17537737.

The product of its (nonzero) digits is 35831808, while the sum is 60.

The spelling of 3619446820638 in words is "three trillion, six hundred nineteen billion, four hundred forty-six million, eight hundred twenty thousand, six hundred thirty-eight".