1518389389 has 16 divisors (see below), whose sum is σ = 1745602560. Its totient is φ = 1306206000.

The previous prime is 1518389371. The next prime is 1518389441. The reversal of 1518389389 is 9839838151.

It is not a de Polignac number, because 1518389389 - 2⁹ = 1518388877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1518389189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203454 + ... + 210784.

It is an arithmetic number, because the mean of its divisors is an integer number (109100160).

Almost surely, 2^1518389389 is an apocalyptic number.

1518389389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1518389389 is a deficient number, since it is larger than the sum of its proper divisors (227213171).

1518389389 is a wasteful number, since it uses less digits than its factorization.

1518389389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8352.

The product of its digits is 1866240, while the sum is 55.

The square root of 1518389389 is about 38966.5162543433. The cubic root of 1518389389 is about 1149.3731653854.

The spelling of 1518389389 in words is "one billion, five hundred eighteen million, three hundred eighty-nine thousand, three hundred eighty-nine".