145219878 has 40 divisors (see below), whose sum is σ = 336631680. Its totient is φ = 46735920.

The previous prime is 145219873. The next prime is 145219889. The reversal of 145219878 is 878912541.

145219878 is a `hidden beast` number, since 1 + 452 + 198 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145219873) 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 19 ways as a sum of consecutive naturals, for example, 10758 + ... + 20153.

It is an arithmetic number, because the mean of its divisors is an integer number (8415792).

Almost surely, 2^145219878 is an apocalyptic number.

145219878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145219878 is an abundant number, since it is smaller than the sum of its proper divisors (191411802).

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

145219878 is a wasteful number, since it uses less digits than its factorization.

145219878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30954 (or 30945 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 145219878 is about 12050.7210572646. The cubic root of 145219878 is about 525.6242044899.

The spelling of 145219878 in words is "one hundred forty-five million, two hundred nineteen thousand, eight hundred seventy-eight".