2051508469 has 2 divisors, whose sum is σ = 2051508470. Its totient is φ = 2051508468.

The previous prime is 2051508463. The next prime is 2051508491. The reversal of 2051508469 is 9648051502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1756699569 + 294808900 = 41913^2 + 17170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051508469 - 2¹⁷ = 2051377397 is a prime.

It is a super-2 number, since 2×2051508469² = 8417373996757447922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051508463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025754234 + 1025754235.

It is an arithmetic number, because the mean of its divisors is an integer number (1025754235).

Almost surely, 2^2051508469 is an apocalyptic number.

It is an amenable number.

2051508469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051508469 is an equidigital number, since it uses as much as digits as its factorization.

2051508469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 2051508469 is about 45293.5808807385. The cubic root of 2051508469 is about 1270.6456033044.

The spelling of 2051508469 in words is "two billion, fifty-one million, five hundred eight thousand, four hundred sixty-nine".