82881519 has 8 divisors (see below), whose sum is σ = 126295680. Its totient is φ = 47360856.

The previous prime is 82881497. The next prime is 82881523. The reversal of 82881519 is 91518828.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82881519 - 2⁸ = 82881263 is a prime.

It is a super-2 number, since 2×82881519² = 13738692383494722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82881119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1973349 + ... + 1973390.

It is an arithmetic number, because the mean of its divisors is an integer number (15786960).

Almost surely, 2^82881519 is an apocalyptic number.

82881519 is a deficient number, since it is larger than the sum of its proper divisors (43414161).

82881519 is a wasteful number, since it uses less digits than its factorization.

82881519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946749.

The product of its digits is 46080, while the sum is 42.

The square root of 82881519 is about 9103.9287672960. The cubic root of 82881519 is about 435.9994090697. Note that the first 3 decimals are identical.

The spelling of 82881519 in words is "eighty-two million, eight hundred eighty-one thousand, five hundred nineteen".