2081500145 has 16 divisors (see below), whose sum is σ = 2676602880. Its totient is φ = 1548359424.

The previous prime is 2081500123. The next prime is 2081500147. The reversal of 2081500145 is 5410051802.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2081500145 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2081500147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140465 + ... + 154574.

It is an arithmetic number, because the mean of its divisors is an integer number (167287680).

Almost surely, 2^2081500145 is an apocalyptic number.

It is an amenable number.

2081500145 is a deficient number, since it is larger than the sum of its proper divisors (595102735).

2081500145 is a wasteful number, since it uses less digits than its factorization.

2081500145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295144.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 2081500145 is about 45623.4604671763. The cubic root of 2081500145 is about 1276.8076668555.

Adding to 2081500145 its reverse (5410051802), we get a palindrome (7491551947).

The spelling of 2081500145 in words is "two billion, eighty-one million, five hundred thousand, one hundred forty-five".