82851319 has 4 divisors (see below), whose sum is σ = 87724944. Its totient is φ = 77977696.

The previous prime is 82851311. The next prime is 82851323. The reversal of 82851319 is 91315828.

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 82851319 - 2³ = 82851311 is a prime.

It is a super-2 number, since 2×82851319² = 13728682120079522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82851311) 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, 2436787 + ... + 2436820.

It is an arithmetic number, because the mean of its divisors is an integer number (21931236).

Almost surely, 2^82851319 is an apocalyptic number.

82851319 is a deficient number, since it is larger than the sum of its proper divisors (4873625).

82851319 is a wasteful number, since it uses less digits than its factorization.

82851319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873624.

The product of its digits is 17280, while the sum is 37.

The square root of 82851319 is about 9102.2699916010. The cubic root of 82851319 is about 435.9464467933.

It can be divided in two parts, 8285 and 1319, that added together give a square (9604 = 98²).

The spelling of 82851319 in words is "eighty-two million, eight hundred fifty-one thousand, three hundred nineteen".