1545230389 has 2 divisors, whose sum is σ = 1545230390. Its totient is φ = 1545230388.

The previous prime is 1545230387. The next prime is 1545230429. The reversal of 1545230389 is 9830325451.

It is an a-pointer prime, because the next prime (1545230429) can be obtained adding 1545230389 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1167588900 + 377641489 = 34170^2 + 19433^2 .

It is a cyclic number.

It is not a de Polignac number, because 1545230389 - 2¹ = 1545230387 is a prime.

Together with 1545230387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1545230381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772615194 + 772615195.

It is an arithmetic number, because the mean of its divisors is an integer number (772615195).

Almost surely, 2^1545230389 is an apocalyptic number.

It is an amenable number.

1545230389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545230389 is an equidigital number, since it uses as much as digits as its factorization.

1545230389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1545230389 is about 39309.4185787579. The cubic root of 1545230389 is about 1156.1062442012.

The spelling of 1545230389 in words is "one billion, five hundred forty-five million, two hundred thirty thousand, three hundred eighty-nine".