145581518 has 8 divisors (see below), whose sum is σ = 225416640. Its totient is φ = 70442640.

The previous prime is 145581517. The next prime is 145581521. The reversal of 145581518 is 815185541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145581517) 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, 1173983 + ... + 1174106.

It is an arithmetic number, because the mean of its divisors is an integer number (28177080).

Almost surely, 2^145581518 is an apocalyptic number.

145581518 is a deficient number, since it is larger than the sum of its proper divisors (79835122).

145581518 is a wasteful number, since it uses less digits than its factorization.

145581518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348122.

The product of its digits is 32000, while the sum is 38.

The square root of 145581518 is about 12065.7166384761. The cubic root of 145581518 is about 526.0601621731.

The spelling of 145581518 in words is "one hundred forty-five million, five hundred eighty-one thousand, five hundred eighteen".