83942356919 has 16 divisors (see below), whose sum is σ = 86391857664. Its totient is φ = 81512932800.

The previous prime is 83942356909. The next prime is 83942356921. The reversal of 83942356919 is 91965324938.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83942356919 is a prime.

It is a super-2 number, since 2×83942356919² (a number of 23 digits) 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 (83942356909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7822892 + ... + 7833614.

It is an arithmetic number, because the mean of its divisors is an integer number (5399491104).

Almost surely, 2^83942356919 is an apocalyptic number.

83942356919 is a deficient number, since it is larger than the sum of its proper divisors (2449500745).

83942356919 is a wasteful number, since it uses less digits than its factorization.

83942356919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638.

The product of its digits is 12597120, while the sum is 59.

The spelling of 83942356919 in words is "eighty-three billion, nine hundred forty-two million, three hundred fifty-six thousand, nine hundred nineteen".