145105913 has 2 divisors, whose sum is σ = 145105914. Its totient is φ = 145105912.

The previous prime is 145105903. The next prime is 145105963. The reversal of 145105913 is 319501541.

145105913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77668969 + 67436944 = 8813^2 + 8212^2 .

It is a cyclic number.

It is not a de Polignac number, because 145105913 - 2⁸ = 145105657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145105903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72552956 + 72552957.

It is an arithmetic number, because the mean of its divisors is an integer number (72552957).

Almost surely, 2^145105913 is an apocalyptic number.

It is an amenable number.

145105913 is a deficient number, since it is larger than the sum of its proper divisors (1).

145105913 is an equidigital number, since it uses as much as digits as its factorization.

145105913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 145105913 is about 12045.9915739635. The cubic root of 145105913 is about 525.4866695091.

The spelling of 145105913 in words is "one hundred forty-five million, one hundred five thousand, nine hundred thirteen".