3145142645 has 4 divisors (see below), whose sum is σ = 3774171180. Its totient is φ = 2516114112.

The previous prime is 3145142639. The next prime is 3145142653. The reversal of 3145142645 is 5462415413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2243822161 + 901320484 = 47369^2 + 30022^2 .

It is a cyclic number.

It is not a de Polignac number, because 3145142645 - 2⁴ = 3145142629 is a prime.

It is a super-3 number, since 3×3145142645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 314514260 + ... + 314514269.

It is an arithmetic number, because the mean of its divisors is an integer number (943542795).

Almost surely, 2^3145142645 is an apocalyptic number.

It is an amenable number.

3145142645 is a deficient number, since it is larger than the sum of its proper divisors (629028535).

3145142645 is an equidigital number, since it uses as much as digits as its factorization.

3145142645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629028534.

The product of its digits is 57600, while the sum is 35.

The square root of 3145142645 is about 56081.5713492409. The cubic root of 3145142645 is about 1465.1433415561.

The spelling of 3145142645 in words is "three billion, one hundred forty-five million, one hundred forty-two thousand, six hundred forty-five".