2016181501 has 2 divisors, whose sum is σ = 2016181502. Its totient is φ = 2016181500.

The previous prime is 2016181483. The next prime is 2016181537. The reversal of 2016181501 is 1051816102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1407375225 + 608806276 = 37515^2 + 24674^2 .

It is a cyclic number.

It is not a de Polignac number, because 2016181501 - 2⁷ = 2016181373 is a prime.

It is a super-2 number, since 2×2016181501² = 8129975689949226002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2016181591) 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, 1008090750 + 1008090751.

It is an arithmetic number, because the mean of its divisors is an integer number (1008090751).

Almost surely, 2^2016181501 is an apocalyptic number.

It is an amenable number.

2016181501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2016181501 is an equidigital number, since it uses as much as digits as its factorization.

2016181501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 2016181501 is about 44901.9097700755. The cubic root of 2016181501 is about 1263.3098292925.

Adding to 2016181501 its reverse (1051816102), we get a palindrome (3067997603).

The spelling of 2016181501 in words is "two billion, sixteen million, one hundred eighty-one thousand, five hundred one".