16030981 has 2 divisors, whose sum is σ = 16030982. Its totient is φ = 16030980.

The previous prime is 16030979. The next prime is 16030991. The reversal of 16030981 is 18903061.

It is a happy number.

16030981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9400356 + 6630625 = 3066^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 16030981 - 2¹ = 16030979 is a prime.

It is a super-2 number, since 2×16030981² = 513984703644722, which contains 22 as substring.

Together with 16030979, 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 (16030951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8015490 + 8015491.

It is an arithmetic number, because the mean of its divisors is an integer number (8015491).

Almost surely, 2^16030981 is an apocalyptic number.

It is an amenable number.

16030981 is a deficient number, since it is larger than the sum of its proper divisors (1).

16030981 is an equidigital number, since it uses as much as digits as its factorization.

16030981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16030981 is about 4003.8707521597. The cubic root of 16030981 is about 252.1467451763.

The spelling of 16030981 in words is "sixteen million, thirty thousand, nine hundred eighty-one".