145722893 has 2 divisors, whose sum is σ = 145722894. Its totient is φ = 145722892.

The previous prime is 145722887. The next prime is 145722911. The reversal of 145722893 is 398227541.

145722893 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., 140256649 + 5466244 = 11843^2 + 2338^2 .

It is an emirp because it is prime and its reverse (398227541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145722893 - 2¹⁶ = 145657357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145722893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145722803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72861446 + 72861447.

It is an arithmetic number, because the mean of its divisors is an integer number (72861447).

Almost surely, 2^145722893 is an apocalyptic number.

It is an amenable number.

145722893 is a deficient number, since it is larger than the sum of its proper divisors (1).

145722893 is an equidigital number, since it uses as much as digits as its factorization.

145722893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 145722893 is about 12071.5737582140. The cubic root of 145722893 is about 526.2303937042.

The spelling of 145722893 in words is "one hundred forty-five million, seven hundred twenty-two thousand, eight hundred ninety-three".