1913376446789 has 4 divisors (see below), whose sum is σ = 1913580506124. Its totient is φ = 1913172387456.

The previous prime is 1913376446759. The next prime is 1913376446797. The reversal of 1913376446789 is 9876446733191.

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 292740513025 + 1620635933764 = 541055^2 + 1273042^2 .

It is a cyclic number.

It is not a de Polignac number, because 1913376446789 - 2⁸ = 1913376446533 is a prime.

It is a super-2 number, since 2×1913376446789² (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 (1913376446759) 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, 102015602 + ... + 102034355.

It is an arithmetic number, because the mean of its divisors is an integer number (478395126531).

Almost surely, 2^{1913376446789} is an apocalyptic number.

It is an amenable number.

1913376446789 is a deficient number, since it is larger than the sum of its proper divisors (204059335).

1913376446789 is an equidigital number, since it uses as much as digits as its factorization.

1913376446789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204059334.

The product of its digits is 164602368, while the sum is 68.

The spelling of 1913376446789 in words is "one trillion, nine hundred thirteen billion, three hundred seventy-six million, four hundred forty-six thousand, seven hundred eighty-nine".