148387381 has 2 divisors, whose sum is σ = 148387382. Its totient is φ = 148387380.

The previous prime is 148387363. The next prime is 148387387. The reversal of 148387381 is 183783841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91987281 + 56400100 = 9591^2 + 7510^2 .

It is a cyclic number.

It is not a de Polignac number, because 148387381 - 2¹⁷ = 148256309 is a prime.

It is a super-2 number, since 2×148387381² = 44037629680078322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148387387) 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, 74193690 + 74193691.

It is an arithmetic number, because the mean of its divisors is an integer number (74193691).

Almost surely, 2^148387381 is an apocalyptic number.

It is an amenable number.

148387381 is a deficient number, since it is larger than the sum of its proper divisors (1).

148387381 is an equidigital number, since it uses as much as digits as its factorization.

148387381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 148387381 is about 12181.4359170009. The cubic root of 148387381 is about 529.4183496767.

The spelling of 148387381 in words is "one hundred forty-eight million, three hundred eighty-seven thousand, three hundred eighty-one".