2940138065 has 4 divisors (see below), whose sum is σ = 3528165684. Its totient is φ = 2352110448.

The previous prime is 2940138041. The next prime is 2940138101. The reversal of 2940138065 is 5608310492.

It is a happy number.

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 1228081936 + 1712056129 = 35044^2 + 41377^2 .

It is a cyclic number.

It is not a de Polignac number, because 2940138065 - 2¹⁰ = 2940137041 is a prime.

It is a Duffinian 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, 294013802 + ... + 294013811.

It is an arithmetic number, because the mean of its divisors is an integer number (882041421).

Almost surely, 2^2940138065 is an apocalyptic number.

It is an amenable number.

2940138065 is a deficient number, since it is larger than the sum of its proper divisors (588027619).

2940138065 is an equidigital number, since it uses as much as digits as its factorization.

2940138065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588027618.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2940138065 is about 54223.0399830183. The cubic root of 2940138065 is about 1432.5921758945.

The spelling of 2940138065 in words is "two billion, nine hundred forty million, one hundred thirty-eight thousand, sixty-five".