1693742964647 has 8 divisors (see below), whose sum is σ = 1729316270976. Its totient is φ = 1658472410232.

The previous prime is 1693742964643. The next prime is 1693742964673. The reversal of 1693742964647 is 7464692473961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1693742964647 - 2² = 1693742964643 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 75676673 + ... + 75699050.

It is an arithmetic number, because the mean of its divisors is an integer number (216164533872).

Almost surely, 2^{1693742964647} is an apocalyptic number.

1693742964647 is a deficient number, since it is larger than the sum of its proper divisors (35573306329).

1693742964647 is a wasteful number, since it uses less digits than its factorization.

1693742964647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151375957.

The product of its digits is 329204736, while the sum is 68.

The spelling of 1693742964647 in words is "one trillion, six hundred ninety-three billion, seven hundred forty-two million, nine hundred sixty-four thousand, six hundred forty-seven".