8103680729 has 2 divisors, whose sum is σ = 8103680730. Its totient is φ = 8103680728.

The previous prime is 8103680701. The next prime is 8103680737. The reversal of 8103680729 is 9270863018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5281946329 + 2821734400 = 72677^2 + 53120^2 .

It is a cyclic number.

It is not a de Polignac number, because 8103680729 - 2¹⁶ = 8103615193 is a prime.

It is a super-3 number, since 3×8103680729³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8103680729.

It is not a weakly prime, because it can be changed into another prime (8103680759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4051840364 + 4051840365.

It is an arithmetic number, because the mean of its divisors is an integer number (4051840365).

Almost surely, 2^8103680729 is an apocalyptic number.

It is an amenable number.

8103680729 is a deficient number, since it is larger than the sum of its proper divisors (1).

8103680729 is an equidigital number, since it uses as much as digits as its factorization.

8103680729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 8103680729 is about 90020.4461719670. The cubic root of 8103680729 is about 2008.6030018692.

The spelling of 8103680729 in words is "eight billion, one hundred three million, six hundred eighty thousand, seven hundred twenty-nine".