91828619 has 2 divisors, whose sum is σ = 91828620. Its totient is φ = 91828618.

The previous prime is 91828613. The next prime is 91828651. The reversal of 91828619 is 91682819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91828619 - 2¹⁶ = 91763083 is a prime.

It is a super-2 number, since 2×91828619² = 16864990534894322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91828619.

It is not a weakly prime, because it can be changed into another prime (91828613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45914309 + 45914310.

It is an arithmetic number, because the mean of its divisors is an integer number (45914310).

Almost surely, 2^91828619 is an apocalyptic number.

91828619 is a deficient number, since it is larger than the sum of its proper divisors (1).

91828619 is an equidigital number, since it uses as much as digits as its factorization.

91828619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 44.

The square root of 91828619 is about 9582.7250299693. The cubic root of 91828619 is about 451.1552522432.

The spelling of 91828619 in words is "ninety-one million, eight hundred twenty-eight thousand, six hundred nineteen".