148718861 has 2 divisors, whose sum is σ = 148718862. Its totient is φ = 148718860.

The previous prime is 148718813. The next prime is 148718879. The reversal of 148718861 is 168817841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148108900 + 609961 = 12170^2 + 781^2 .

It is a cyclic number.

It is not a de Polignac number, because 148718861 - 2⁶ = 148718797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148718891) 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, 74359430 + 74359431.

It is an arithmetic number, because the mean of its divisors is an integer number (74359431).

Almost surely, 2^148718861 is an apocalyptic number.

It is an amenable number.

148718861 is a deficient number, since it is larger than the sum of its proper divisors (1).

148718861 is an equidigital number, since it uses as much as digits as its factorization.

148718861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 44.

The square root of 148718861 is about 12195.0342762946. The cubic root of 148718861 is about 529.8122759873.

It can be divided in two parts, 14871 and 8861, that added together give a palindrome (23732).

The spelling of 148718861 in words is "one hundred forty-eight million, seven hundred eighteen thousand, eight hundred sixty-one".