83164381 has 2 divisors, whose sum is σ = 83164382. Its totient is φ = 83164380.

The previous prime is 83164379. The next prime is 83164409. The reversal of 83164381 is 18346138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64545156 + 18619225 = 8034^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 83164381 - 2¹ = 83164379 is a prime.

It is a super-2 number, since 2×83164381² = 13832628534226322, which contains 22 as substring.

Together with 83164379, 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 (83164321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41582190 + 41582191.

It is an arithmetic number, because the mean of its divisors is an integer number (41582191).

Almost surely, 2^83164381 is an apocalyptic number.

It is an amenable number.

83164381 is a deficient number, since it is larger than the sum of its proper divisors (1).

83164381 is an equidigital number, since it uses as much as digits as its factorization.

83164381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 83164381 is about 9119.4506961768. The cubic root of 83164381 is about 436.4948457373.

The spelling of 83164381 in words is "eighty-three million, one hundred sixty-four thousand, three hundred eighty-one".