1654726361 has 2 divisors, whose sum is σ = 1654726362. Its totient is φ = 1654726360.

The previous prime is 1654726357. The next prime is 1654726393. The reversal of 1654726361 is 1636274561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1228923136 + 425803225 = 35056^2 + 20635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1654726361 - 2² = 1654726357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1654726351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827363180 + 827363181.

It is an arithmetic number, because the mean of its divisors is an integer number (827363181).

Almost surely, 2^1654726361 is an apocalyptic number.

It is an amenable number.

1654726361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654726361 is an equidigital number, since it uses as much as digits as its factorization.

1654726361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 1654726361 is about 40678.3279031968. The cubic root of 1654726361 is about 1182.7929534445.

The spelling of 1654726361 in words is "one billion, six hundred fifty-four million, seven hundred twenty-six thousand, three hundred sixty-one".