2081917501 has 2 divisors, whose sum is σ = 2081917502. Its totient is φ = 2081917500.

The previous prime is 2081917417. The next prime is 2081917531. The reversal of 2081917501 is 1057191802.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1995408900 + 86508601 = 44670^2 + 9301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081917501 - 2¹³ = 2081909309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081917531) 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, 1040958750 + 1040958751.

It is an arithmetic number, because the mean of its divisors is an integer number (1040958751).

Almost surely, 2^2081917501 is an apocalyptic number.

It is an amenable number.

2081917501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081917501 is an equidigital number, since it uses as much as digits as its factorization.

2081917501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 2081917501 is about 45628.0341566454. The cubic root of 2081917501 is about 1276.8929975772.

The spelling of 2081917501 in words is "two billion, eighty-one million, nine hundred seventeen thousand, five hundred one".