82148719 has 4 divisors (see below), whose sum is σ = 82316520. Its totient is φ = 81980920.

The previous prime is 82148711. The next prime is 82148741. The reversal of 82148719 is 91784128.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82148719 - 2³ = 82148711 is a prime.

It is a super-2 number, since 2×82148719² = 13496824066681922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82148711) 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, 83164 + ... + 84145.

It is an arithmetic number, because the mean of its divisors is an integer number (20579130).

Almost surely, 2^82148719 is an apocalyptic number.

82148719 is a deficient number, since it is larger than the sum of its proper divisors (167801).

82148719 is a wasteful number, since it uses less digits than its factorization.

82148719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167800.

The product of its digits is 32256, while the sum is 40.

The square root of 82148719 is about 9063.5930513235. The cubic root of 82148719 is about 434.7106350533.

The spelling of 82148719 in words is "eighty-two million, one hundred forty-eight thousand, seven hundred nineteen".