83146981 has 2 divisors, whose sum is σ = 83146982. Its totient is φ = 83146980.

The previous prime is 83146979. The next prime is 83147003. The reversal of 83146981 is 18964138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79816356 + 3330625 = 8934^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 83146981 - 2¹ = 83146979 is a prime.

It is a super-2 number, since 2×83146981² = 13826840898828722, which contains 22 as substring.

Together with 83146979, 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 (83146961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41573490 + 41573491.

It is an arithmetic number, because the mean of its divisors is an integer number (41573491).

Almost surely, 2^83146981 is an apocalyptic number.

It is an amenable number.

83146981 is a deficient number, since it is larger than the sum of its proper divisors (1).

83146981 is an equidigital number, since it uses as much as digits as its factorization.

83146981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 83146981 is about 9118.4966414426. The cubic root of 83146981 is about 436.4644018543.

The spelling of 83146981 in words is "eighty-three million, one hundred forty-six thousand, nine hundred eighty-one".