2051915653 has 2 divisors, whose sum is σ = 2051915654. Its totient is φ = 2051915652.

The previous prime is 2051915651. The next prime is 2051915681. The reversal of 2051915653 is 3565191502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1406400004 + 645515649 = 37502^2 + 25407^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051915653 - 2¹ = 2051915651 is a prime.

Together with 2051915651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051915651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025957826 + 1025957827.

It is an arithmetic number, because the mean of its divisors is an integer number (1025957827).

Almost surely, 2^2051915653 is an apocalyptic number.

It is an amenable number.

2051915653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051915653 is an equidigital number, since it uses as much as digits as its factorization.

2051915653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 2051915653 is about 45298.0755993011. The cubic root of 2051915653 is about 1270.7296637800.

The spelling of 2051915653 in words is "two billion, fifty-one million, nine hundred fifteen thousand, six hundred fifty-three".