117648919 has 2 divisors, whose sum is σ = 117648920. Its totient is φ = 117648918.

The previous prime is 117648913. The next prime is 117648929. The reversal of 117648919 is 919846711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117648919 - 2⁹ = 117648407 is a prime.

It is a super-2 number, since 2×117648919² = 27682536283737122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117648913) 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, 58824459 + 58824460.

It is an arithmetic number, because the mean of its divisors is an integer number (58824460).

Almost surely, 2^117648919 is an apocalyptic number.

117648919 is a deficient number, since it is larger than the sum of its proper divisors (1).

117648919 is an equidigital number, since it uses as much as digits as its factorization.

117648919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 46.

The square root of 117648919 is about 10846.6086404922. The cubic root of 117648919 is about 489.9998875468. Note that the first 3 decimals are identical.

It can be divided in two parts, 11764891 and 9, that added together give a square (11764900 = 3430²).

The spelling of 117648919 in words is "one hundred seventeen million, six hundred forty-eight thousand, nine hundred nineteen".