148767181 has 2 divisors, whose sum is σ = 148767182. Its totient is φ = 148767180.

The previous prime is 148767139. The next prime is 148767193. The reversal of 148767181 is 181767841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93026025 + 55741156 = 9645^2 + 7466^2 .

It is an emirp because it is prime and its reverse (181767841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148767181 - 2¹⁷ = 148636109 is a prime.

It is a super-2 number, since 2×148767181² = 44263348285373522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148767781) 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, 74383590 + 74383591.

It is an arithmetic number, because the mean of its divisors is an integer number (74383591).

Almost surely, 2^148767181 is an apocalyptic number.

It is an amenable number.

148767181 is a deficient number, since it is larger than the sum of its proper divisors (1).

148767181 is an equidigital number, since it uses as much as digits as its factorization.

148767181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 43.

The square root of 148767181 is about 12197.0152496420. The cubic root of 148767181 is about 529.8696499185.

The spelling of 148767181 in words is "one hundred forty-eight million, seven hundred sixty-seven thousand, one hundred eighty-one".