82194641 has 4 divisors (see below), whose sum is σ = 83352384. Its totient is φ = 81036900.

The previous prime is 82194583. The next prime is 82194659. The reversal of 82194641 is 14649128.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82194641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82194041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578765 + ... + 578906.

It is an arithmetic number, because the mean of its divisors is an integer number (20838096).

Almost surely, 2^82194641 is an apocalyptic number.

It is an amenable number.

82194641 is a deficient number, since it is larger than the sum of its proper divisors (1157743).

82194641 is a wasteful number, since it uses less digits than its factorization.

82194641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157742.

The product of its digits is 13824, while the sum is 35.

The square root of 82194641 is about 9066.1260194198. The cubic root of 82194641 is about 434.7916225736.

The spelling of 82194641 in words is "eighty-two million, one hundred ninety-four thousand, six hundred forty-one".