83061819 has 6 divisors (see below), whose sum is σ = 119978196. Its totient is φ = 55374540.

The previous prime is 83061791. The next prime is 83061827. The reversal of 83061819 is 91816038.

83061819 is a `hidden beast` number, since 8 + 30 + 618 + 1 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-83061819 is a prime.

It is a super-2 number, since 2×83061819² = 13798531551177522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83061619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4614537 + ... + 4614554.

It is an arithmetic number, because the mean of its divisors is an integer number (19996366).

Almost surely, 2^83061819 is an apocalyptic number.

83061819 is a deficient number, since it is larger than the sum of its proper divisors (36916377).

83061819 is a wasteful number, since it uses less digits than its factorization.

83061819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9229097 (or 9229094 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 83061819 is about 9113.8257060359. The cubic root of 83061819 is about 436.3153369955.

The spelling of 83061819 in words is "eighty-three million, sixty-one thousand, eight hundred nineteen".