148843778186869 has 2 divisors, whose sum is σ = 148843778186870. Its totient is φ = 148843778186868.

The previous prime is 148843778186839. The next prime is 148843778186897. The reversal of 148843778186869 is 968681877348841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146886400908900 + 1957377277969 = 12119670^2 + 1399063^2 .

It is a cyclic number.

It is not a de Polignac number, because 148843778186869 - 2²³ = 148843769798261 is a prime.

It is a super-2 number, since 2×148843778186869² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 148843778186869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148843778186809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74421889093434 + 74421889093435.

It is an arithmetic number, because the mean of its divisors is an integer number (74421889093435).

Almost surely, 2^{148843778186869} is an apocalyptic number.

It is an amenable number.

148843778186869 is a deficient number, since it is larger than the sum of its proper divisors (1).

148843778186869 is an equidigital number, since it uses as much as digits as its factorization.

148843778186869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24970788864, while the sum is 88.

The spelling of 148843778186869 in words is "one hundred forty-eight trillion, eight hundred forty-three billion, seven hundred seventy-eight million, one hundred eighty-six thousand, eight hundred sixty-nine".