7274772145 has 4 divisors (see below), whose sum is σ = 8729726580. Its totient is φ = 5819817712.

The previous prime is 7274772137. The next prime is 7274772151. The reversal of 7274772145 is 5412774727.

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 4966161841 + 2308610304 = 70471^2 + 48048^2 .

It is a cyclic number.

It is not a de Polignac number, because 7274772145 - 2³ = 7274772137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7274772095 and 7274772104.

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, 727477210 + ... + 727477219.

It is an arithmetic number, because the mean of its divisors is an integer number (2182431645).

Almost surely, 2^7274772145 is an apocalyptic number.

It is an amenable number.

7274772145 is a deficient number, since it is larger than the sum of its proper divisors (1454954435).

7274772145 is a wasteful number, since it uses less digits than its factorization.

7274772145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454954434.

The product of its digits is 768320, while the sum is 46.

The square root of 7274772145 is about 85292.2748260357. The cubic root of 7274772145 is about 1937.6401803258.

The spelling of 7274772145 in words is "seven billion, two hundred seventy-four million, seven hundred seventy-two thousand, one hundred forty-five".