117828619 has 2 divisors, whose sum is σ = 117828620. Its totient is φ = 117828618.

The previous prime is 117828617. The next prime is 117828677. The reversal of 117828619 is 916828711.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117828619 - 2¹ = 117828617 is a prime.

It is a super-2 number, since 2×117828619² = 27767166910894322, which contains 22 as substring.

Together with 117828617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (117828611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58914309 + 58914310.

It is an arithmetic number, because the mean of its divisors is an integer number (58914310).

Almost surely, 2^117828619 is an apocalyptic number.

117828619 is a deficient number, since it is larger than the sum of its proper divisors (1).

117828619 is an equidigital number, since it uses as much as digits as its factorization.

117828619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 43.

The square root of 117828619 is about 10854.8891749294. The cubic root of 117828619 is about 490.2492401321.

The spelling of 117828619 in words is "one hundred seventeen million, eight hundred twenty-eight thousand, six hundred nineteen".