145818 has 12 divisors (see below), whose sum is σ = 315978. Its totient is φ = 48600.

The previous prime is 145807. The next prime is 145819. The reversal of 145818 is 818541.

145818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 74529 + 71289 = 273^2 + 267^2 .

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 145791 and 145800.

It is not an unprimeable number, because it can be changed into a prime (145819) by changing a digit.

145818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4033 + ... + 4068.

2¹⁴⁵⁸¹⁸ is an apocalyptic number.

145818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145818 is an abundant number, since it is smaller than the sum of its proper divisors (170160).

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

145818 is a wasteful number, since it uses less digits than its factorization.

145818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109 (or 8106 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 145818 is about 381.8612313393. The cubic root of 145818 is about 52.6344851378.

It can be divided in two parts, 1458 and 18, that multiplied together give a square (26244 = 162²).

The spelling of 145818 in words is "one hundred forty-five thousand, eight hundred eighteen".