117810841 has 4 divisors (see below), whose sum is σ = 120550672. Its totient is φ = 115071012.

The previous prime is 117810839. The next prime is 117810851. The reversal of 117810841 is 148018711.

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, and also an emirpimes, since its reverse is a distinct semiprime: 148018711 = 17 ⋅8706983.

It is a cyclic number.

It is not a de Polignac number, because 117810841 - 2¹ = 117810839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117810851) 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 in 3 ways as a sum of consecutive naturals, for example, 1369851 + ... + 1369936.

It is an arithmetic number, because the mean of its divisors is an integer number (30137668).

Almost surely, 2^117810841 is an apocalyptic number.

It is an amenable number.

117810841 is a deficient number, since it is larger than the sum of its proper divisors (2739831).

117810841 is an equidigital number, since it uses as much as digits as its factorization.

117810841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739830.

The product of its (nonzero) digits is 1792, while the sum is 31.

The square root of 117810841 is about 10854.0702503715. The cubic root of 117810841 is about 490.2245825986.

The spelling of 117810841 in words is "one hundred seventeen million, eight hundred ten thousand, eight hundred forty-one".