1694340387120 has 320 divisors, whose sum is σ = 5604264161280. Its totient is φ = 422784921600.

The previous prime is 1694340387101. The next prime is 1694340387127. The reversal of 1694340387120 is 217830434961.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1694340387120.

It is not an unprimeable number, because it can be changed into a prime (1694340387127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26744922 + ... + 26808198.

It is an arithmetic number, because the mean of its divisors is an integer number (17513325504).

Almost surely, 2^{1694340387120} is an apocalyptic number.

1694340387120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1694340387120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802132080640).

1694340387120 is an abundant number, since it is smaller than the sum of its proper divisors (3909923774160).

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

1694340387120 is a wasteful number, since it uses less digits than its factorization.

1694340387120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63444 (or 63438 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 1694340387120 in words is "one trillion, six hundred ninety-four billion, three hundred forty million, three hundred eighty-seven thousand, one hundred twenty".