82109653 has 2 divisors, whose sum is σ = 82109654. Its totient is φ = 82109652.

The previous prime is 82109641. The next prime is 82109681. The reversal of 82109653 is 35690128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71199844 + 10909809 = 8438^2 + 3303^2 .

It is a cyclic number.

It is not a de Polignac number, because 82109653 - 2²¹ = 80012501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82109633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41054826 + 41054827.

It is an arithmetic number, because the mean of its divisors is an integer number (41054827).

Almost surely, 2^82109653 is an apocalyptic number.

It is an amenable number.

82109653 is a deficient number, since it is larger than the sum of its proper divisors (1).

82109653 is an equidigital number, since it uses as much as digits as its factorization.

82109653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 82109653 is about 9061.4376894619. The cubic root of 82109653 is about 434.6417149346.

The spelling of 82109653 in words is "eighty-two million, one hundred nine thousand, six hundred fifty-three".