8101819 has 16 divisors (see below), whose sum is σ = 9529344. Its totient is φ = 6811200.

The previous prime is 8101811. The next prime is 8101823. The reversal of 8101819 is 9181018.

It is not a de Polignac number, because 8101819 - 2³ = 8101811 is a prime.

It is a super-2 number, since 2×8101819² = 131278942217522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8101811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7327 + ... + 8359.

It is an arithmetic number, because the mean of its divisors is an integer number (595584).

Almost surely, 2^8101819 is an apocalyptic number.

8101819 is a deficient number, since it is larger than the sum of its proper divisors (1427525).

8101819 is a wasteful number, since it uses less digits than its factorization.

8101819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 8101819 is about 2846.3694419383. The cubic root of 8101819 is about 200.8449172147.

The spelling of 8101819 in words is "eight million, one hundred one thousand, eight hundred nineteen".