145881195 has 64 divisors (see below), whose sum is σ = 253317120. Its totient is φ = 71539200.

The previous prime is 145881161. The next prime is 145881247. The reversal of 145881195 is 591188541.

It is not a de Polignac number, because 145881195 - 2¹⁰ = 145880171 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1049436 + ... + 1049574.

It is an arithmetic number, because the mean of its divisors is an integer number (3958080).

Almost surely, 2^145881195 is an apocalyptic number.

145881195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145881195 is a deficient number, since it is larger than the sum of its proper divisors (107435925).

145881195 is a wasteful number, since it uses less digits than its factorization.

145881195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its digits is 57600, while the sum is 42.

The square root of 145881195 is about 12078.1287871922. The cubic root of 145881195 is about 526.4208766488.

The spelling of 145881195 in words is "one hundred forty-five million, eight hundred eighty-one thousand, one hundred ninety-five".