2145153205 has 16 divisors (see below), whose sum is σ = 2803353840. Its totient is φ = 1566309888.

The previous prime is 2145153191. The next prime is 2145153277. The reversal of 2145153205 is 5023515412.

It can be written as a sum of positive squares in 8 ways, for example, as 198049329 + 1947103876 = 14073^2 + 44126^2 .

It is not a de Polignac number, because 2145153205 - 2⁵ = 2145153173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179622 + ... + 191191.

It is an arithmetic number, because the mean of its divisors is an integer number (175209615).

Almost surely, 2^2145153205 is an apocalyptic number.

It is an amenable number.

2145153205 is a deficient number, since it is larger than the sum of its proper divisors (658200635).

2145153205 is a wasteful number, since it uses less digits than its factorization.

2145153205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370920.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2145153205 is about 46315.7986544548. The cubic root of 2145153205 is about 1289.6922938537.

Adding to 2145153205 its reverse (5023515412), we get a palindrome (7168668617).

The spelling of 2145153205 in words is "two billion, one hundred forty-five million, one hundred fifty-three thousand, two hundred five".