145889773 has 2 divisors, whose sum is σ = 145889774. Its totient is φ = 145889772.

The previous prime is 145889747. The next prime is 145889791. The reversal of 145889773 is 377988541.

145889773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83210884 + 62678889 = 9122^2 + 7917^2 .

It is a cyclic number.

It is not a de Polignac number, because 145889773 - 2¹³ = 145881581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145889773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145889743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72944886 + 72944887.

It is an arithmetic number, because the mean of its divisors is an integer number (72944887).

Almost surely, 2^145889773 is an apocalyptic number.

It is an amenable number.

145889773 is a deficient number, since it is larger than the sum of its proper divisors (1).

145889773 is an equidigital number, since it uses as much as digits as its factorization.

145889773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 52.

The square root of 145889773 is about 12078.4838866474. The cubic root of 145889773 is about 526.4311945191.

The spelling of 145889773 in words is "one hundred forty-five million, eight hundred eighty-nine thousand, seven hundred seventy-three".