2141505145 has 16 divisors (see below), whose sum is σ = 2862916560. Its totient is φ = 1526886144.

The previous prime is 2141505139. The next prime is 2141505167. The reversal of 2141505145 is 5415051412.

It can be written as a sum of positive squares in 8 ways, for example, as 49449024 + 2092056121 = 7032^2 + 45739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141505145 - 2⁹ = 2141504633 is a prime.

It is a super-2 number, since 2×2141505145² = 9172088572122942050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566154 + ... + 569923.

It is an arithmetic number, because the mean of its divisors is an integer number (178932285).

Almost surely, 2^2141505145 is an apocalyptic number.

It is an amenable number.

2141505145 is a deficient number, since it is larger than the sum of its proper divisors (721411415).

2141505145 is a wasteful number, since it uses less digits than its factorization.

2141505145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136124.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 2141505145 is about 46276.3994385907. The cubic root of 2141505145 is about 1288.9607929633.

Adding to 2141505145 its reverse (5415051412), we get a palindrome (7556556557).

The spelling of 2141505145 in words is "two billion, one hundred forty-one million, five hundred five thousand, one hundred forty-five".