1913522217728 has 36 divisors (see below), whose sum is σ = 4166803358088. Its totient is φ = 869782824960.

The previous prime is 1913522217697. The next prime is 1913522217751. The reversal of 1913522217728 is 8277122253191.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339756101 + ... + 339761732.

Almost surely, 2^{1913522217728} is an apocalyptic number.

It is an amenable number.

1913522217728 is an abundant number, since it is smaller than the sum of its proper divisors (2253281140360).

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

1913522217728 is an equidigital number, since it uses as much as digits as its factorization.

1913522217728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679517860 (or 679517846 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The spelling of 1913522217728 in words is "one trillion, nine hundred thirteen billion, five hundred twenty-two million, two hundred seventeen thousand, seven hundred twenty-eight".