1393394741741 has 4 divisors (see below), whose sum is σ = 1475359138332. Its totient is φ = 1311430345152.

The previous prime is 1393394741737. The next prime is 1393394741777. The reversal of 1393394741741 is 1471474933931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 444662248900 + 948732492841 = 666830^2 + 974029^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393394741741 - 2² = 1393394741737 is a prime.

It is a super-2 number, since 2×1393394741741² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393394744741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40982198270 + ... + 40982198303.

It is an arithmetic number, because the mean of its divisors is an integer number (368839784583).

Almost surely, 2^{1393394741741} is an apocalyptic number.

It is an amenable number.

1393394741741 is a deficient number, since it is larger than the sum of its proper divisors (81964396591).

1393394741741 is an equidigital number, since it uses as much as digits as its factorization.

1393394741741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81964396590.

The product of its digits is 6858432, while the sum is 56.

The spelling of 1393394741741 in words is "one trillion, three hundred ninety-three billion, three hundred ninety-four million, seven hundred forty-one thousand, seven hundred forty-one".