82537919 has 4 divisors (see below), whose sum is σ = 86882040. Its totient is φ = 78193800.

The previous prime is 82537909. The next prime is 82537943. The reversal of 82537919 is 91973528.

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 82537919 - 2¹² = 82533823 is a prime.

It is a super-2 number, since 2×82537919² = 13625016145701122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82537919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82537909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2172032 + ... + 2172069.

It is an arithmetic number, because the mean of its divisors is an integer number (21720510).

Almost surely, 2^82537919 is an apocalyptic number.

82537919 is a deficient number, since it is larger than the sum of its proper divisors (4344121).

82537919 is a wasteful number, since it uses less digits than its factorization.

82537919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344120.

The product of its digits is 136080, while the sum is 44.

The square root of 82537919 is about 9085.0381947463. The cubic root of 82537919 is about 435.3960703225.

The spelling of 82537919 in words is "eighty-two million, five hundred thirty-seven thousand, nine hundred nineteen".