1648448600538 has 64 divisors (see below), whose sum is σ = 3394310325120. Its totient is φ = 533414633472.

The previous prime is 1648448600527. The next prime is 1648448600609. The reversal of 1648448600538 is 8350068448461.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27531978 + ... + 27591786.

It is an arithmetic number, because the mean of its divisors is an integer number (53036098830).

Almost surely, 2^{1648448600538} is an apocalyptic number.

1648448600538 is an abundant number, since it is smaller than the sum of its proper divisors (1745861724582).

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

1648448600538 is a wasteful number, since it uses less digits than its factorization.

1648448600538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60511.

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 1648448600538 in words is "one trillion, six hundred forty-eight billion, four hundred forty-eight million, six hundred thousand, five hundred thirty-eight".