1545234389 has 2 divisors, whose sum is σ = 1545234390. Its totient is φ = 1545234388.

The previous prime is 1545234377. The next prime is 1545234419. The reversal of 1545234389 is 9834325451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1400031889 + 145202500 = 37417^2 + 12050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545234389 - 2⁴ = 1545234373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545230389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772617194 + 772617195.

It is an arithmetic number, because the mean of its divisors is an integer number (772617195).

Almost surely, 2^1545234389 is an apocalyptic number.

It is an amenable number.

1545234389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545234389 is an equidigital number, since it uses as much as digits as its factorization.

1545234389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 44.

The square root of 1545234389 is about 39309.4694571168. The cubic root of 1545234389 is about 1156.1072417700.

The spelling of 1545234389 in words is "one billion, five hundred forty-five million, two hundred thirty-four thousand, three hundred eighty-nine".