145130389 has 4 divisors (see below), whose sum is σ = 145200256. Its totient is φ = 145060524.

The previous prime is 145130387. The next prime is 145130423. The reversal of 145130389 is 983031541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145130389 - 2¹ = 145130387 is a prime.

It is a super-2 number, since 2×145130389² = 42125659622582642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145130387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31719 + ... + 36004.

It is an arithmetic number, because the mean of its divisors is an integer number (36300064).

Almost surely, 2^145130389 is an apocalyptic number.

It is an amenable number.

145130389 is a deficient number, since it is larger than the sum of its proper divisors (69867).

145130389 is an equidigital number, since it uses as much as digits as its factorization.

145130389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69866.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 145130389 is about 12047.0074707373. The cubic root of 145130389 is about 525.5162136501.

The spelling of 145130389 in words is "one hundred forty-five million, one hundred thirty thousand, three hundred eighty-nine".