1693742964648 has 128 divisors (see below), whose sum is σ = 4975724160000. Its totient is φ = 480232159680.

The previous prime is 1693742964643. The next prime is 1693742964673. The reversal of 1693742964648 is 8464692473961.

It is not an unprimeable number, because it can be changed into a prime (1693742964643) 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, 293083 + ... + 1863701.

It is an arithmetic number, because the mean of its divisors is an integer number (38872845000).

Almost surely, 2^{1693742964648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1693742964648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2487862080000).

1693742964648 is an abundant number, since it is smaller than the sum of its proper divisors (3281981195352).

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

1693742964648 is a wasteful number, since it uses less digits than its factorization.

1693742964648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570780 (or 1570762 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 69.

The spelling of 1693742964648 in words is "one trillion, six hundred ninety-three billion, seven hundred forty-two million, nine hundred sixty-four thousand, six hundred forty-eight".