1912763682729 has 9 divisors (see below), whose sum is σ = 2762886868183. Its totient is φ = 1275173022432.

The previous prime is 1912763682721. The next prime is 1912763682737. The reversal of 1912763682729 is 9272863672191.

The square root of 1912763682729 is 1383027.

It is a perfect power (a square), and thus also a powerful number.

1912763682729 is a `hidden beast` number, since 1 + 91 + 276 + 3 + 6 + 8 + 272 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1912763682721) and next prime (1912763682737).

It can be written as a sum of positive squares in only one way, i.e., 403698849129 + 1509064833600 = 635373^2 + 1228440^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1912763682729 - 2³ = 1912763682721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1912763682721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3918577 + ... + 4379585.

Almost surely, 2^{1912763682729} is an apocalyptic number.

1912763682729 is the 1383027-th square number.

1912763682729 is the 691514-th centered octagonal number.

It is an amenable number.

1912763682729 is a deficient number, since it is larger than the sum of its proper divisors (850123185454).

1912763682729 is an frugal number, since it uses more digits than its factorization.

1912763682729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922024 (or 461012 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 1912763682729 in words is "one trillion, nine hundred twelve billion, seven hundred sixty-three million, six hundred eighty-two thousand, seven hundred twenty-nine".