145738818 has 16 divisors (see below), whose sum is σ = 323864160. Its totient is φ = 48579588.

The previous prime is 145738811. The next prime is 145738829. The reversal of 145738818 is 818837541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (145738811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349380 + ... + 1349487.

It is an arithmetic number, because the mean of its divisors is an integer number (20241510).

Almost surely, 2^145738818 is an apocalyptic number.

145738818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145738818 is an abundant number, since it is smaller than the sum of its proper divisors (178125342).

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

145738818 is a wasteful number, since it uses less digits than its factorization.

145738818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698878 (or 2698872 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 145738818 is about 12072.2333476453. The cubic root of 145738818 is about 526.2495623093.

The spelling of 145738818 in words is "one hundred forty-five million, seven hundred thirty-eight thousand, eight hundred eighteen".