2645940073 has 8 divisors (see below), whose sum is σ = 3085644800. Its totient is φ = 2267948340.

The previous prime is 2645940053. The next prime is 2645940091. The reversal of 2645940073 is 3700495462.

It is a happy number.

It is not a de Polignac number, because 2645940073 - 2⁹ = 2645939561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2645940053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3856713 + ... + 3857398.

It is an arithmetic number, because the mean of its divisors is an integer number (385705600).

Almost surely, 2^2645940073 is an apocalyptic number.

It is an amenable number.

2645940073 is a deficient number, since it is larger than the sum of its proper divisors (439704727).

2645940073 is an frugal number, since it uses more digits than its factorization.

2645940073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7714132 (or 7714118 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 2645940073 is about 51438.7020928794. The cubic root of 2645940073 is about 1383.1204457543.

The spelling of 2645940073 in words is "two billion, six hundred forty-five million, nine hundred forty thousand, seventy-three".