145869186 has 16 divisors (see below), whose sum is σ = 291857184. Its totient is φ = 48603264.

The previous prime is 145869173. The next prime is 145869193. The reversal of 145869186 is 681968541.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24385 + ... + 29771.

It is an arithmetic number, because the mean of its divisors is an integer number (18241074).

Almost surely, 2^145869186 is an apocalyptic number.

145869186 is an abundant number, since it is smaller than the sum of its proper divisors (145987998).

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

145869186 is a wasteful number, since it uses less digits than its factorization.

145869186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905.

The product of its digits is 414720, while the sum is 48.

The square root of 145869186 is about 12077.6316386947. The cubic root of 145869186 is about 526.4064311913.

The spelling of 145869186 in words is "one hundred forty-five million, eight hundred sixty-nine thousand, one hundred eighty-six".