2145608090 has 8 divisors (see below), whose sum is σ = 3862094580. Its totient is φ = 858243232.

The previous prime is 2145608089. The next prime is 2145608093. The reversal of 2145608090 is 908065412.

It can be written as a sum of positive squares in 2 ways, for example, as 2025990121 + 119617969 = 45011^2 + 10937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2145608090.

It is not an unprimeable number, because it can be changed into a prime (2145608093) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 107280395 + ... + 107280414.

Almost surely, 2^2145608090 is an apocalyptic number.

2145608090 is a deficient number, since it is larger than the sum of its proper divisors (1716486490).

2145608090 is a wasteful number, since it uses less digits than its factorization.

2145608090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214560816.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2145608090 is about 46320.7090835190. The cubic root of 2145608090 is about 1289.7834482158.

The spelling of 2145608090 in words is "two billion, one hundred forty-five million, six hundred eight thousand, ninety".