148545889 has 2 divisors, whose sum is σ = 148545890. Its totient is φ = 148545888.

The previous prime is 148545871. The next prime is 148545913. The reversal of 148545889 is 988545841.

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., 138886225 + 9659664 = 11785^2 + 3108^2 .

It is an emirp because it is prime and its reverse (988545841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148545889 - 2¹⁵ = 148513121 is a prime.

It is a super-3 number, since 3×148545889³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (148545809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74272944 + 74272945.

It is an arithmetic number, because the mean of its divisors is an integer number (74272945).

Almost surely, 2^148545889 is an apocalyptic number.

It is an amenable number.

148545889 is a deficient number, since it is larger than the sum of its proper divisors (1).

148545889 is an equidigital number, since it uses as much as digits as its factorization.

148545889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843200, while the sum is 52.

The square root of 148545889 is about 12187.9403099950. The cubic root of 148545889 is about 529.6067915347.

It can be divided in two parts, 1485 and 45889, that added together give a palindrome (47374).

The spelling of 148545889 in words is "one hundred forty-eight million, five hundred forty-five thousand, eight hundred eighty-nine".