7273945861 has 16 divisors (see below), whose sum is σ = 8955442944. Its totient is φ = 5753349504.

The previous prime is 7273945853. The next prime is 7273945897. The reversal of 7273945861 is 1685493727.

It is not a de Polignac number, because 7273945861 - 2³ = 7273945853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7273945799 and 7273945808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7273945831) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 315840 + ... + 338086.

It is an arithmetic number, because the mean of its divisors is an integer number (559715184).

Almost surely, 2^7273945861 is an apocalyptic number.

It is an amenable number.

7273945861 is a deficient number, since it is larger than the sum of its proper divisors (1681497083).

7273945861 is a wasteful number, since it uses less digits than its factorization.

7273945861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25860.

The product of its digits is 2540160, while the sum is 52.

The square root of 7273945861 is about 85287.4308500379. The cubic root of 7273945861 is about 1937.5668171255.

The spelling of 7273945861 in words is "seven billion, two hundred seventy-three million, nine hundred forty-five thousand, eight hundred sixty-one".