145811995 has 24 divisors (see below), whose sum is σ = 204141168. Its totient is φ = 99691200.

The previous prime is 145811987. The next prime is 145811999. The reversal of 145811995 is 599118541.

It is not a de Polignac number, because 145811995 - 2³ = 145811987 is a prime.

It is a super-3 number, since 3×145811995³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (145811999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112300 + ... + 113590.

It is an arithmetic number, because the mean of its divisors is an integer number (8505882).

Almost surely, 2^145811995 is an apocalyptic number.

145811995 is a deficient number, since it is larger than the sum of its proper divisors (58329173).

145811995 is a wasteful number, since it uses less digits than its factorization.

145811995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1764 counting only the distinct ones).

The product of its digits is 64800, while the sum is 43.

The square root of 145811995 is about 12075.2637652351. The cubic root of 145811995 is about 526.3376260598.

The spelling of 145811995 in words is "one hundred forty-five million, eight hundred eleven thousand, nine hundred ninety-five".