145686918 has 32 divisors (see below), whose sum is σ = 323914752. Its totient is φ = 43380000.

The previous prime is 145686917. The next prime is 145686941. The reversal of 145686918 is 819686541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145686911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27708 + ... + 32543.

It is an arithmetic number, because the mean of its divisors is an integer number (10122336).

Almost surely, 2^145686918 is an apocalyptic number.

145686918 is an abundant number, since it is smaller than the sum of its proper divisors (178227834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145686918 is a wasteful number, since it uses less digits than its factorization.

145686918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60300.

The product of its digits is 414720, while the sum is 48.

The square root of 145686918 is about 12070.0835954023. The cubic root of 145686918 is about 526.1870861724.

The spelling of 145686918 in words is "one hundred forty-five million, six hundred eighty-six thousand, nine hundred eighteen".