2690120729 has 2 divisors, whose sum is σ = 2690120730. Its totient is φ = 2690120728.

The previous prime is 2690120723. The next prime is 2690120767. The reversal of 2690120729 is 9270210962.

2690120729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2690120767) can be obtained adding 2690120729 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2606306704 + 83814025 = 51052^2 + 9155^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690120729 - 2⁸ = 2690120473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2690120692 and 2690120701.

It is not a weakly prime, because it can be changed into another prime (2690120723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345060364 + 1345060365.

It is an arithmetic number, because the mean of its divisors is an integer number (1345060365).

Almost surely, 2^2690120729 is an apocalyptic number.

It is an amenable number.

2690120729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690120729 is an equidigital number, since it uses as much as digits as its factorization.

2690120729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 2690120729 is about 51866.3737791645. The cubic root of 2690120729 is about 1390.7762220763.

The spelling of 2690120729 in words is "two billion, six hundred ninety million, one hundred twenty thousand, seven hundred twenty-nine".