148221719 has 2 divisors, whose sum is σ = 148221720. Its totient is φ = 148221718.

The previous prime is 148221713. The next prime is 148221721. The reversal of 148221719 is 917122841.

It is a strong prime.

It is an emirp because it is prime and its reverse (917122841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148221719 - 2¹² = 148217623 is a prime.

It is a super-2 number, since 2×148221719² = 43939355966629922, which contains 22 as substring.

Together with 148221721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148221713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74110859 + 74110860.

It is an arithmetic number, because the mean of its divisors is an integer number (74110860).

Almost surely, 2^148221719 is an apocalyptic number.

148221719 is a deficient number, since it is larger than the sum of its proper divisors (1).

148221719 is an equidigital number, since it uses as much as digits as its factorization.

148221719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 148221719 is about 12174.6342450194. The cubic root of 148221719 is about 529.2212593300.

The spelling of 148221719 in words is "one hundred forty-eight million, two hundred twenty-one thousand, seven hundred nineteen".