1650540361 has 2 divisors, whose sum is σ = 1650540362. Its totient is φ = 1650540360.

The previous prime is 1650540343. The next prime is 1650540383. The reversal of 1650540361 is 1630450561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1243267600 + 407272761 = 35260^2 + 20181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1650540361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1650540301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825270180 + 825270181.

It is an arithmetic number, because the mean of its divisors is an integer number (825270181).

Almost surely, 2^1650540361 is an apocalyptic number.

It is an amenable number.

1650540361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650540361 is an equidigital number, since it uses as much as digits as its factorization.

1650540361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1650540361 is about 40626.8428628167. The cubic root of 1650540361 is about 1181.7947315575.

The spelling of 1650540361 in words is "one billion, six hundred fifty million, five hundred forty thousand, three hundred sixty-one".