148814681 has 2 divisors, whose sum is σ = 148814682. Its totient is φ = 148814680.

The previous prime is 148814671. The next prime is 148814717. The reversal of 148814681 is 186418841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126337600 + 22477081 = 11240^2 + 4741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148814681 is a prime.

It is a super-2 number, since 2×148814681² = 44291618562263522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148814641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74407340 + 74407341.

It is an arithmetic number, because the mean of its divisors is an integer number (74407341).

Almost surely, 2^148814681 is an apocalyptic number.

It is an amenable number.

148814681 is a deficient number, since it is larger than the sum of its proper divisors (1).

148814681 is an equidigital number, since it uses as much as digits as its factorization.

148814681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49152, while the sum is 41.

The square root of 148814681 is about 12198.9622919329. The cubic root of 148814681 is about 529.9260380948.

The spelling of 148814681 in words is "one hundred forty-eight million, eight hundred fourteen thousand, six hundred eighty-one".