117921803 has 2 divisors, whose sum is σ = 117921804. Its totient is φ = 117921802.

The previous prime is 117921787. The next prime is 117921823. The reversal of 117921803 is 308129711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117921803 - 2⁴ = 117921787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117921803.

It is not a weakly prime, because it can be changed into another prime (117921823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58960901 + 58960902.

It is an arithmetic number, because the mean of its divisors is an integer number (58960902).

Almost surely, 2^117921803 is an apocalyptic number.

117921803 is a deficient number, since it is larger than the sum of its proper divisors (1).

117921803 is an equidigital number, since it uses as much as digits as its factorization.

117921803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 117921803 is about 10859.1805860295. The cubic root of 117921803 is about 490.3784428902.

The spelling of 117921803 in words is "one hundred seventeen million, nine hundred twenty-one thousand, eight hundred three".