2145345354 has 24 divisors (see below), whose sum is σ = 4808533860. Its totient is φ = 690455808.

The previous prime is 2145345353. The next prime is 2145345373. The reversal of 2145345354 is 4535435412.

2145345354 is a `hidden beast` number, since 21 + 4 + 534 + 53 + 54 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1852011225 + 293334129 = 43035^2 + 17127^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2145345353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2054407 + ... + 2055450.

Almost surely, 2^2145345354 is an apocalyptic number.

2145345354 is an abundant number, since it is smaller than the sum of its proper divisors (2663188506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145345354 is a wasteful number, since it uses less digits than its factorization.

2145345354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109894 (or 4109891 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 2145345354 is about 46317.8729433898. The cubic root of 2145345354 is about 1289.7308001455.

The spelling of 2145345354 in words is "two billion, one hundred forty-five million, three hundred forty-five thousand, three hundred fifty-four".