123881893 has 2 divisors, whose sum is σ = 123881894. Its totient is φ = 123881892.

The previous prime is 123881837. The next prime is 123881897. The reversal of 123881893 is 398188321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123276609 + 605284 = 11103^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 123881893 - 2¹⁷ = 123750821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123881897) 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, 61940946 + 61940947.

It is an arithmetic number, because the mean of its divisors is an integer number (61940947).

Almost surely, 2^123881893 is an apocalyptic number.

It is an amenable number.

123881893 is a deficient number, since it is larger than the sum of its proper divisors (1).

123881893 is an equidigital number, since it uses as much as digits as its factorization.

123881893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 43.

The square root of 123881893 is about 11130.2243014236. The cubic root of 123881893 is about 498.5047234202.

The spelling of 123881893 in words is "one hundred twenty-three million, eight hundred eighty-one thousand, eight hundred ninety-three".