82348781 has 2 divisors, whose sum is σ = 82348782. Its totient is φ = 82348780.

The previous prime is 82348769. The next prime is 82348801. The reversal of 82348781 is 18784328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42784681 + 39564100 = 6541^2 + 6290^2 .

It is a cyclic number.

It is not a de Polignac number, because 82348781 - 2²² = 78154477 is a prime.

It is a super-2 number, since 2×82348781² = 13562643464371922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82348751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41174390 + 41174391.

It is an arithmetic number, because the mean of its divisors is an integer number (41174391).

Almost surely, 2^82348781 is an apocalyptic number.

It is an amenable number.

82348781 is a deficient number, since it is larger than the sum of its proper divisors (1).

82348781 is an equidigital number, since it uses as much as digits as its factorization.

82348781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 41.

The square root of 82348781 is about 9074.6229122757. The cubic root of 82348781 is about 435.0632417851.

The spelling of 82348781 in words is "eighty-two million, three hundred forty-eight thousand, seven hundred eighty-one".