2061632509 has 2 divisors, whose sum is σ = 2061632510. Its totient is φ = 2061632508.

The previous prime is 2061632501. The next prime is 2061632527. The reversal of 2061632509 is 9052361602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123925625 + 937706884 = 33525^2 + 30622^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061632509 - 2³ = 2061632501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2061632501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030816254 + 1030816255.

It is an arithmetic number, because the mean of its divisors is an integer number (1030816255).

Almost surely, 2^2061632509 is an apocalyptic number.

It is an amenable number.

2061632509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061632509 is an equidigital number, since it uses as much as digits as its factorization.

2061632509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2061632509 is about 45405.2035454088. The cubic root of 2061632509 is about 1272.7323545683.

The spelling of 2061632509 in words is "two billion, sixty-one million, six hundred thirty-two thousand, five hundred nine".