819683097 has 4 divisors (see below), whose sum is σ = 1092910800. Its totient is φ = 546455396.

The previous prime is 819683093. The next prime is 819683141. The reversal of 819683097 is 790386918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 819683097 - 2² = 819683093 is a prime.

It is a super-2 number, since 2×819683097² = 1343760759015022818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (819683093) 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 3 ways as a sum of consecutive naturals, for example, 136613847 + ... + 136613852.

It is an arithmetic number, because the mean of its divisors is an integer number (273227700).

Almost surely, 2^819683097 is an apocalyptic number.

It is an amenable number.

819683097 is a deficient number, since it is larger than the sum of its proper divisors (273227703).

819683097 is a wasteful number, since it uses less digits than its factorization.

819683097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273227702.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 819683097 is about 28630.1082254329. The cubic root of 819683097 is about 935.8695703183.

The spelling of 819683097 in words is "eight hundred nineteen million, six hundred eighty-three thousand, ninety-seven".