2690399161 has 2 divisors, whose sum is σ = 2690399162. Its totient is φ = 2690399160.

The previous prime is 2690399147. The next prime is 2690399191. The reversal of 2690399161 is 1619930962.

2690399161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2593966761 + 96432400 = 50931^2 + 9820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690399161 - 2¹¹ = 2690397113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2690399191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345199580 + 1345199581.

It is an arithmetic number, because the mean of its divisors is an integer number (1345199581).

Almost surely, 2^2690399161 is an apocalyptic number.

It is an amenable number.

2690399161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690399161 is an equidigital number, since it uses as much as digits as its factorization.

2690399161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 2690399161 is about 51869.0578379828. The cubic root of 2690399161 is about 1390.8242029769.

The spelling of 2690399161 in words is "two billion, six hundred ninety million, three hundred ninety-nine thousand, one hundred sixty-one".