3140640145 has 4 divisors (see below), whose sum is σ = 3768768180. Its totient is φ = 2512512112.

The previous prime is 3140640137. The next prime is 3140640161. The reversal of 3140640145 is 5410460413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5410460413 = 47 ⋅115116179.

It can be written as a sum of positive squares in 2 ways, for example, as 776346769 + 2364293376 = 27863^2 + 48624^2 .

It is a cyclic number.

It is not a de Polignac number, because 3140640145 - 2³ = 3140640137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314064010 + ... + 314064019.

It is an arithmetic number, because the mean of its divisors is an integer number (942192045).

Almost surely, 2^3140640145 is an apocalyptic number.

It is an amenable number.

3140640145 is a deficient number, since it is larger than the sum of its proper divisors (628128035).

3140640145 is an equidigital number, since it uses as much as digits as its factorization.

3140640145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628128034.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3140640145 is about 56041.4145520971. The cubic root of 3140640145 is about 1464.4438546454.

The spelling of 3140640145 in words is "three billion, one hundred forty million, six hundred forty thousand, one hundred forty-five".