148191187 has 2 divisors, whose sum is σ = 148191188. Its totient is φ = 148191186.

The previous prime is 148191163. The next prime is 148191209. The reversal of 148191187 is 781191841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148191187 - 2¹⁹ = 147666899 is a prime.

It is not a weakly prime, because it can be changed into another prime (148191137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74095593 + 74095594.

It is an arithmetic number, because the mean of its divisors is an integer number (74095594).

Almost surely, 2^148191187 is an apocalyptic number.

148191187 is a deficient number, since it is larger than the sum of its proper divisors (1).

148191187 is an equidigital number, since it uses as much as digits as its factorization.

148191187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 40.

The square root of 148191187 is about 12173.3802618665. The cubic root of 148191187 is about 529.1849189673.

The spelling of 148191187 in words is "one hundred forty-eight million, one hundred ninety-one thousand, one hundred eighty-seven".