1393673763940 has 12 divisors (see below), whose sum is σ = 2926714904316. Its totient is φ = 557469505568.

The previous prime is 1393673763919. The next prime is 1393673763959. The reversal of 1393673763940 is 493673763931.

It can be written as a sum of positive squares in 2 ways, for example, as 177876436516 + 1215797327424 = 421754^2 + 1102632^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34841844079 + ... + 34841844118.

It is an arithmetic number, because the mean of its divisors is an integer number (243892908693).

Almost surely, 2^{1393673763940} is an apocalyptic number.

1393673763940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1393673763940 is an abundant number, since it is smaller than the sum of its proper divisors (1533041140376).

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

1393673763940 is a wasteful number, since it uses less digits than its factorization.

1393673763940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69683688206 (or 69683688204 counting only the distinct ones).

The product of its (nonzero) digits is 46294416, while the sum is 61.

Subtracting from 1393673763940 its reverse (493673763931), we obtain a palindrome (900000000009).

The spelling of 1393673763940 in words is "one trillion, three hundred ninety-three billion, six hundred seventy-three million, seven hundred sixty-three thousand, nine hundred forty".