135146881 has 2 divisors, whose sum is σ = 135146882. Its totient is φ = 135146880.

The previous prime is 135146863. The next prime is 135146897. The reversal of 135146881 is 188641531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77158656 + 57988225 = 8784^2 + 7615^2 .

It is a cyclic number.

It is not a de Polignac number, because 135146881 - 2⁵ = 135146849 is a prime.

It is a super-2 number, since 2×135146881² = 36529358888056322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135146881.

It is not a weakly prime, because it can be changed into another prime (135146831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67573440 + 67573441.

It is an arithmetic number, because the mean of its divisors is an integer number (67573441).

Almost surely, 2^135146881 is an apocalyptic number.

It is an amenable number.

135146881 is a deficient number, since it is larger than the sum of its proper divisors (1).

135146881 is an equidigital number, since it uses as much as digits as its factorization.

135146881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The square root of 135146881 is about 11625.2690721548. The cubic root of 135146881 is about 513.1787632200.

The spelling of 135146881 in words is "one hundred thirty-five million, one hundred forty-six thousand, eight hundred eighty-one".