145885185 has 32 divisors (see below), whose sum is σ = 261041280. Its totient is φ = 77298624.

The previous prime is 145885139. The next prime is 145885219. The reversal of 145885185 is 581588541.

145885185 is a `hidden beast` number, since 14 + 588 + 51 + 8 + 5 = 666.

It is not a de Polignac number, because 145885185 - 2⁶ = 145885121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 145885185.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17754 + ... + 24636.

It is an arithmetic number, because the mean of its divisors is an integer number (8157540).

Almost surely, 2^145885185 is an apocalyptic number.

145885185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145885185 is a deficient number, since it is larger than the sum of its proper divisors (115156095).

145885185 is a wasteful number, since it uses less digits than its factorization.

145885185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7054 (or 7048 counting only the distinct ones).

The product of its digits is 256000, while the sum is 45.

The square root of 145885185 is about 12078.2939606552. The cubic root of 145885185 is about 526.4256759883.

It can be divided in two parts, 145885 and 185, that added together give a triangular number (146070 = T₅₄₀).

The spelling of 145885185 in words is "one hundred forty-five million, eight hundred eighty-five thousand, one hundred eighty-five".