145887318 has 20 divisors (see below), whose sum is σ = 326896020. Its totient is φ = 48629052.

The previous prime is 145887283. The next prime is 145887397. The reversal of 145887318 is 813788541.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 450108 + ... + 450431.

It is an arithmetic number, because the mean of its divisors is an integer number (16344801).

Almost surely, 2^145887318 is an apocalyptic number.

145887318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145887318 is an abundant number, since it is smaller than the sum of its proper divisors (181008702).

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

145887318 is an equidigital number, since it uses as much as digits as its factorization.

145887318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900553 (or 900544 counting only the distinct ones).

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

The square root of 145887318 is about 12078.3822592266. The cubic root of 145887318 is about 526.4282416143.

The spelling of 145887318 in words is "one hundred forty-five million, eight hundred eighty-seven thousand, three hundred eighteen".