148718891 has 2 divisors, whose sum is σ = 148718892. Its totient is φ = 148718890.

The previous prime is 148718887. The next prime is 148718893. The reversal of 148718891 is 198817841.

148718891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (198817841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148718891 - 2² = 148718887 is a prime.

Together with 148718893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148718893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74359445 + 74359446.

It is an arithmetic number, because the mean of its divisors is an integer number (74359446).

Almost surely, 2^148718891 is an apocalyptic number.

148718891 is a deficient number, since it is larger than the sum of its proper divisors (1).

148718891 is an equidigital number, since it uses as much as digits as its factorization.

148718891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 47.

The square root of 148718891 is about 12195.0355063034. The cubic root of 148718891 is about 529.8123116124.

The spelling of 148718891 in words is "one hundred forty-eight million, seven hundred eighteen thousand, eight hundred ninety-one".